I ask this because there were heaps of people on social media complaining about a particular clothing line being "childish" for the target market also the "beauty gurus" on YouTube have DIY graphic tees on their channel and the comments are the same thing!
Are graphic tees childish for teens or young adults? (20-25)
When I first read this, I thought you were talking about the T shirts with the designer brand name slathered all over the front. I don't like those.
If you're talking about some of the shirts with some sentence like 'I'm in charge until something goes wrong' or 'I can't remember if I had déjà vu', I think those are pretty cool. Or maybe a shirt you had from participating in an extra-curricular activity or sport, you get the picture...
In some aspects, I see clothing as a way of expressing oneself. That's why I like seeing such shirts; it gives me some insight on who the person is. My style is matching certain colors together, so hm clothing is rather plain words-wise.
Yet another predictable round of typical "young adults these days dress/act like immature hooligans" - with the same group of non-conformist young adults who believe that agreeing with these sentiments makes them more mature, refined, and sophisticated.