Exactly.
Its all pretty simple:
With high volume in sound, there is a high risk of increasing tinnitus.
Concerts have extremely high volume, so concerts are high risk. We know earplugs protect somewhat, but we also hear enough stories of people who protected their ears and still the t increased because they did not protect enough.
So even with earplugs there is a high risk. This is al people can tell you, maybe it will get worse, maybe not. But these are the facts. And you need to make a decision based on that.
So like someone else said: are you willing to go to something so risky for the reward that its going to give you? If your T does increase, can you live with that?
If not, don't go to high risk places. If you can and want to take the risk, enjoy.
I think its really a larger philossophical concept of whether one is willing to accept that life can demand us to change ourselves and/or our lifestyle and whether one is able to do that. Being creative is of great help here, in the means of finding new ways of having fun,
However I dont mean to be judgemental here, and if one is willing to accept to risk then yes, enjoy