Did my musical adventurousness and indeed, interest as a whole, calcify by age 35?

I recently encountered on an old epsode of QI the factoid (it might be a true fact, but without provenance or an examination of the experimental methods, let's leave it with the mark of dubiousness) that most people's musical taste has set firmly by the time they're 35, after which they tend to be uninterested in or dislike music that's new to them, preferring to listen to the things they listened to before. Leaving aside whether this is a strong claim or not, ( brief swerve into broad statistical claims and science journalism, )

it stuck with me because after a couple of months at The Finnish Equivalent of Target, I've been getting extremely irritated by the in-store playlist because it has way too much pop country on it (it also has "Fast Car" by Tracy Chapman and "Rocket Man" by Elton John, so it can't ALL be new even if it's unfamiliar to me) and I was feeling resentful of All This New Shit that was being pumped past my ears and then worried about that. However, when I focused on the new-to-me songs that I did like instead of the ones I don't, I found there were about as many. I only really HATE the pop country, and that's probably less a musical judgment than a lingering symptom of PTSD from growing up in the south. Can't expect Finns to understand that.

As a result, I put 'try to investigate current music a bit more' on my mental to-do list for now. Maybe use Shazam to identify the ones I didn't hate.