Yeah, after getting involved in a couple different gaming communities, it seems the Dragon Age one is just very toxic. Skyrim is all about collaboration and sharing. The DA modding community has tried to do that, however the general user community it seems has greatly ruined it for the modders.
Not that I disagree about BioWare fandom being trash (it has always been), but I wouldn't romanticize Bethesda fandom that much. The Skyrim modding community has calmed down now that enough time has passed that only people still playing the game four years after release are still around, but it was the pits of hell a few years ago, much much worse than DA fandom has ever been. What you see left of the Skyrim fandom now is kinda the spoils of war, what's left after all the drama wore out, not the picture a healthy modding community.
And before Skyrim it was the Fallout community, and Oblivion, and Morrowind etc, just like before DAI modders getting harrassed there were Mass Effect, DA2, DAO modders getting that. Modding communities are all toxic trash, there isn't really a healthy one. The difference in perception between, say, DAI modders and Skyrim modders left at this point, is that DAI modders seem to be folding more than usual, but I'd wager that's probably because a lot of people modding this game seem to be first-time modders, they haven't been through drama before and the first instinct is to pull entirely. If you look at the more popular/older Skyrim modders like Arthmoor, they're not still around because their communities are less toxic, but because they've become very thick-skinned and don't care anymore - they've been taking this for years and any drama thrown their way is nothing new at this point.
I mean, both are valid responses - keep sharing if you can handle the drama, stop if you can't, everyone knows their own limits. My point is more that the DAI modding community is about as wanky as any other, and the Skyrim one (where people have been doxxed over rextextures) really shouldn't be held up as an example of good behavior. DAI will get there eventually, to the sense of collaboration and sharing, it just never happens in the first couple years of a game's release. You gotta give it time, but once the bulk of those toxic people ruining it for everyone start leaving for other games, the modders still left standing in the fandom are the ones who'll uphold that sense of nice, peaceful community you get from looking at dormant fandoms years after the fact.
Anyway, Fallout's coming out now, and much of the people interested in modding will flock over there and hopefully take their drama with them, so I think things may get better for DAI modders soon.