I dunno, maybe for some, but there were definitely others who just seemed mad it didn't fit whatever arbitrary ideological purity it didn't meet, or for not having a billion dollars in funding, or just not being whatever other site they were caping for (or in some cases, ran themselves; fuck you Dreamwidth forever).
But also a lot of people just seemed like they were desperate to find any excuse not to like it, or else had settled on a definition of "better" that was impossible for four queers in a shed to ever accomplish.
I wrote for a zine that started on this very website, and within the space of a month the editor had gone from "this place is great, isn't it wonderful to collab with fellow queers again" to "the devs are evil and hate disabled people because they won't immediately implement this extremely specific feature I don't even personally need" and leaving in a huff. Issue 2 never came out.
To some extent I think it's just the kind of trauma response that affects everything queers try to do for themselves. We've all been damaged by wider society, and any perceived slight within a queer space just immediately escalates into being equal to whatever sins the straights have committed against them. All proportion disappears. Suddenly one annoying guy in the comments is proof the entire site is fascist, and then they go running back to the site run by an apartheid emerald billionaire. Better the devil you think you know, than the "betrayal" of someone you desperately wanted to pedestal ...