Excellent point.
I, being a product of the 60s would have a hard time with youngsters who's funk reference is Bruno Mars.
Our band leader is half my age and we play several vintage 60s rock songs. These songs are a part of my history. When I perform them ,I know and feel these songs different from some born 40 years after the song.
BTW, I'm a huge Sly Stone fan. If I mentioned the song "Dance To The Music" and the band response was " what's that?" It would be a deal breaker.
On the other side of the coin, I wouldn't fit in with youngsters that want to play Ed Sheeran. The point, a significant age difference can be an issue and something we might want to think about.
Blue