Age wise it is, but like some have pointed out, retro is subjective and varies from person to person albeit in personal ways.
It's all moot at this point, some will say it's aesthetic, others will say it's age, etc.
Personally I like to think of everything having a fine line where I just stop.
Like, I don't care if something is retro or what year it came from, but I feel that eventually I'll find a line where I just don't care about any and all new releases and just continue to enjoy movies, music and games to a certain year or generation or era.
I thought I already reached that point years ago, but I guess I'm still looking for that fine line.