There is definitely art that I was originally dismissive of but have grown to love, and often because enough people wax poetic about it that I decided to give it another chance. In fact, I hated the first episode of Severance so much that I haven't watched another, but so many people on this very forum have raved about it that I plan to give it another go.
I think there's a big difference between pretending to like something in order to be cool, and changing your mind about something because you've given it more time, or you've changed, or whatever.
Another example: growing up, I hated country music, because it was my dad's music, and he made a point about how my musical taste (mostly metal and punk, back then) was crap. As an adult, I have made a pointed effort to listen to and appreciate country music, because it is important to someone I love and...mixed results! It's still not my first choice of genre, but now there are some country songs and artists that I think are just fantastic!
Apropos of this topic, my thoughts about overrated/underrated geek media have really shifted as I've aged. Partially, I think this is an inevitable result of having more points of comparison.