There's a bit of a thing floating around in the roleplaying-game Twitterverse/blogiverse, and I think it's spread to (or as far as I know adopted from) other fandoms: "badwrongfun." The idea that because some game or play style isn't fun for you, someone else who plays that (or builds a fandom around, or whatever) is clearly having Bad Wrong Fun and must be stopped for their own good.
Usually it's a silly thing to be arguing - if I wanna play hack-and-slash D&D and you wanna play deep-angsty-roleplaying D&D (or vice versa) neither of us is BWFing unless we're in the same game group. And sometimes when you point this out to folks, they''ll realize how silly it is to mandate what others find fun in. Other times not so much, and those are the folks you can safely classify as not worth listening to. (On t'other hoof, you don't want to flat-out dismiss all criticism as unfounded. Don't listen to anonymous haters, but if friends and family think you're getting too deep into a fandom, at least do a reality-check on yourself. Moderation is healthy. Take it from someone who's been around various fans and fandoms since before G1.)