I don't think you can say that "Only people who have never had severe H would say that hearing protection makes it worse." I can't speak for everybody on here that has a similar viewpoint to me, but I don't think anyone is saying "don't worry about your hearing, just push on and do what you like.", it is about where you draw the line on when to start protecting your ears.
I appreciate that my own experience is different from most, as anecdotal evidence suggests it to be significantly under 5% of those on here that have tinnitus from an allergic reaction, but that in itself comes with its own challenges as the pool of information to help understand it is so much poorer. The first sign that something was wrong with my hearing was only severe hyperacusis. Effectively, if I cocooned myself away in a quiet house, I had no hearing issues at all, but general outside noises, office noise, or the drone of driving a car would leave me with around 45 minutes to one hour of screaming tinnitus afterwards (as if I had just come out of a club at 2 AM having had my hearing abused with 100dBspl+ music for 5 hours) - this lasted for months before the screaming never stopped.
I could so easily have fallen into the cycle of saying that I should permanently wear hearing protection and in a way, I did. I avoided all noisy situations I could, so weekends would be spent at home, never going out anywhere, or doing anything in the evenings after work, not even going to a shopping centre as the noise was too much, but I still had to go to work from Monday to Friday, so I had the drone of the car and the noise of the office, every single weekday and that would give me screaming tinnitus every time. I have been there and I know what it is like.
In an earlier post, I made the comment to be careful about overprotecting your hearing and instantly it was taken as meaning a hard and fast "don't protect your ears". Everybody's own experience will be different, but the basic biology of your hearing increasing its gain to look for sounds in quiet environments is true. If you don't enrich your environment with sound, then your hearing becomes more sensitive to both internal and external noises - it is why so many people on here with tinnitus use white noise or similar to aid sleep. My own experience suggests that this increased sensitivity is not permanent, but any unnecessary suffering, whether short or long term is surely best avoided?!?
I would never condone just pushing on and abusing your ears - I would never suggest this to someone without tinnitus or hyperacusis either. I don't unnecessarily hang around in the kitchen when all the appliances are on, as the noise aggravates my hearing, but nor do I race out immediately to avoid it, I wear ear defenders when vacuuming and I still don't go out to clubs, but I do deliberately "feed" my auditory system with enriching and varied sounds and for me at least, the hyperacusis has slowly reduced.
This is very sensible, but it is worth noting that your condition is quite unique. It seems sensible that people who have hyperacusis after noise exposure should take extra care to avoid loud, and perhaps even moderate noise, as there is an unknown yet existent period of time where the ear can seem to heal to a degree, and further aggravation can hinder this process.
I mainly have problems with the idea that "overprotection makes hyperacusis worse" I don't think this is the case generally, and I would view it as scaremongering or even dangerous to tell someone that if they have recently developed hyperacusis from a sound incident.
The reality of it is, is that nobody on this board can say for sure the state of anybody's hearing system, so they can never tell them, say, "No your blender can't damage your ears, use it without protection, if you keep wearing protection you'll just worsen your hyperacusis".
Also if sounds are causing people physical discomfort to their ears, I'm not sure exposure will ever get past that discomfort, and "heal" the person. Maybe at some point, done carefully that is the case, but I will always err on the side of caution.
I know that my hearing was messed up in an instance, by people with no mind about safe volume levels, and I know the suffering it caused me. So I am rightly biased when it comes to things like this.
EDIT: in regard to your original statement that overprotection makes hyperacusis worse, I still feel that this is not the case, it may on a psychological level, but I believe in cases of noise induced hyperacusis, there is a biological basis for it, and overprotection will not worsen this kind of hyperacusis, it will only increase the chance of recovery in my opinion.
I have read studies where they damaged rats hearings, and healed some in moderate noise and some in silence, and the ones in moderate noise healed better. Then I read another study that showed opposite results to that. However both studies were small enough and the differences in improvements were small enough, that I would not use it as evidence either way. (i dont have links to these studies, i'm actually recalling on studies other members have posted here, and assuming they were valid).