I would assume it comes from disliking the taste of hops. I find hoppy beers taste like soap, personally but IPAs and other hoppy beers have become incredibly popular, so navigating the craft brew landscape can be a minefield for people that dislike it.
Still, it's not like there's exactly a shortage of beers for people that don't really like hops so while it makes it kind of difficult sometimes (especially when all you're given is a name of a beer) it isn't something to get that upset over.
Because there is way more to beer than IPAs! There are lagers, hefeweizens, stouts, radlers, and yet the only beer that's stocked in any quantity are the same boring bitter-ass "craft" IPAs.
And maybe I just hate watching people and the market gravitate towards only one thing.
Still, it's not like there's exactly a shortage of beers for people that don't really like hops so while it makes it kind of difficult sometimes (especially when all you're given is a name of a beer) it isn't something to get that upset over.