I'm not going to pretend the 80s show was well written, though if I may say so, it seems far better written than the 2 that followed it and preceded G4. But Friendship Is Magic is considered distinct because, in spite of being written partly for selling products, it also stands well enough on its own.
Oh, you're in the "MLP is for kids" crowd? That's not tired and debunked to heck and back: demographics aren't an absolute determinant for a show, even if they can be the source of more profit by comparison. Men can enjoy romance, women can enjoy action and people of various ages can enjoy cartoons. And don't even start on that unmanly thing, because men who are in touch with their emotions are far more manly than someone who puffs up their chest and acts macho but doesn't even know the rough basics of putting together an outfit or can listen to someone and comfort them.
This is a subforum of people watching anime, which is still, for the most part, not nearly as mainstream in Japan as manga. And is still stereotyped to no end in America as "weeaboos"
Consider that in contrast with America, where we still arguably see comics as more niche even with the popularity of film adaptations through the MCU.
You don't have to be a fan of MLP in any form (I would agree with you to not be a fan of G2; which is apparently just 1.5, technically, but G2 sounds better; and G3 and 3.5 [very short lived for a reason]), but you could at least be a bit less flippant in your reflection of how you don't like it.
I may never watch Steven Universe (I want to, but just haven't made the time), but that doesn't mean I get to make off color gay jokes or something at their expense anymore than someone who doesn't watch Adventure Time can make some obnoxious statement about them. We're all awesome as fans, we should be awesome to each other.
