Of my nerdy hobbies I have seen a number of black guys interested in comic books. Still overwhelmingly male hobby and white guys make up the majority of customers. I’ve only recently gotten into buying Manga but not sure the demographics but I’ve heard there is manga for pretty much every group.

Rest of the hobbies I haven’t seen the justification like you mentioned. I love games like civilization but I’m just one person. Gaming has been down this crazy road for a while along with sci-fi and fantasy book publishing