No, some are masculine, some are profitable, some are of significance historically. This "grown man" is delighting in stuff kids in middle school have grown out of. And here is where this is emblematic of a bigger trend: Peter Pansies, boys who don't out away childish things and progress to adulthood. Don't get me wrong, live and let live, he wants to waste his life on cheap plastic dolls, but it's actually the duty of adults to not pretend this is cool or healthy or manly.
I helped a friend last week with a flood maxed worse by a tenant refusing access. Turns out he is a hoarder of Japanese figurines (think those big eyed anime girls) and was hiding/reorganizing his collection for hours. Pathetic guy was a virtual shut in, 30s, loving parents but he has fallen way off the rails.