Yea, few things I wonder:
a) their results are good and they are taking their time with not leaking any information so that no one copies their approach/device before they hit the "shelves".
b) their results are not so good due to either bad trial setup or how quickly result wearers off and how often you have to do it.
c) they made some changes to their device and now their "good" results from early trials are not so great and they are trying to figure out what is going on to get back to level of success with "a".
d) treatment have side effects that while "silencing" tinnitus, introduce a whole new set of issues (which I doubt).
Dr. Susan Shore is definitely a scientist and a talented one and as we all know - these scientists don't have immediate sympathy to humans, their main goal is to achieve success in their research in the first place.
Let's hear what she has to say during her speech on the 24th of this month or whatever the date is. Perhaps we will hear something new, bad or good.
Interesting set of scenarios.
As for a), some people already tried and built their own version of the device, using her papers and patents material and experimenting, so I'm not so sure that secrecy is so much of an issue. Maybe their implementation has some proprietary elements that are not in the papers and in the patents, but I doubt they would let something essential out of a patent. So I would exclude a). In fact, if I were them, I would go faster because of a), as reverse engineering and competition is inevitable down the line.
b) I hope it's not that, but it's a possibility, but I attach a relatively low probability to that. Given the time it took them to complete the trial, I would hope at least they didn't screw it up.
c) This would be bad, but that would mean the trial basically failed, or did very poorly, there is no going back, they would have to do a new trial, I think this is too pessimistic but who knows.
d) This is very much a possibility. I'm still wondering if it will be a class II or III device, but when you play with nerves and electricity you need to be very careful. At some point, years ago, I saw a scatterplot of improvements/worsening, from one of the old trials perhaps, I can't remember exactly, but I'm sure it was this and not Lenire, and there were a few people who did worsen. So d) is definitely possible, but fingers crossed it's statistically minimal.
As for
[...] these scientists don't have immediate sympathy to humans, their main goal is to achieve success in their research in the first place
I wouldn't extend this to all scientists, but in Shore's case, the wording is clear, her first point is to publish her research in a journal, it says that literally in her joint press release, so I can't say you are wrong there about her. We'll see how long it will take, and how many people will make it there, but this has lasted forever. A sloth under Propofol, as I wrote other times, would have had more urgency in bringing these results to the people. Sadly, it is what it is.