I am sure it has helped people. I am gotta wait 8 more months before I can even talk to an audiologist about it because nothing is offered my area. Currently on a waiting list to be put on a schedule.
Tinnitus Talk Support Forum
There's no evidence TRT helps. More than likely, they were mild cases that would have gotten better anyway. https://www.tinnitustalk.com/threads/tinnitus-retraining-therapy-is-ineffective-latest-study-finds.35055/