The risk of acquiring tinnitus from the vaccines doesn't seem any larger than that of taking any other drug really. It's not something I'm particularly concerned about as there doesn't seem to be many reported cases.I think this is also an unfortunate reality of our future. Since COVID-19 has a very real danger to our auditory system, it seems like routine vaccines will be a thing in our future. Another good thing is that hopefully they can address the issues with tinnitus and hearing loss with future development of the vaccines even though they are very small, to begin with.
I think we have to accept the fact that all drugs are inherently risky and that each person will react differently. I expect to see people talk about their tinnitus spiking here because we are on a tinnitus forum where people are ultimately hyper-aware of it. You might also find people reporting worsening symptoms of other conditions on other health forums.
Truly unbiased data is hard to come by.