I don't think one can conclude that tinnitus is severe purely because it can be heard in 80 dB environment. You can also hear rustling of leaves in 80 dB environment... but rustling of leaves is low volume. It is mostly about pitch. A very high frequency tinnitus like mine (and many others on here) is bound to be heard over the tv, even at fairly low volume because tv rarely reach that high frequencies.
I am purely speaking of volume in tinnitus and also was before. Tinnitus could be not so severe in volume, but very severe in how it affects you. That's how it is for me for example. I would never call my tinnitus severe though (in volume).
Listen... I didn't mean to undermine your suffering. I just wanted to point out that tinnitus doesn't have to be "loud" to be heard over tv/dishwasher.
And yes, I don't go out and yes it is a shit life, but unlike you I don't really have a choice because of my ongoing fairly bad hyperacusis. I tried and it spiked it, even with ear plugs... plus I get a really fucked headache as a result... not exactly enjoyable. You got lucky that yours got much better... treasure it and don't bring down people who are not as fortunate as you.