There's just way too many people who think that, just because they have an opnion, that they can share it here.
Especially toxic ones like "SE make this" or "SE do something about that." These people who just continue to whine incessantly and demand from others without regard to how their actions would impact others. Not to mention, how many times have you all seen a thread/topic made by a person who's completely new to the game, and figures that "hey maybe the official forums is where I can go to get helpful information!" and they're just met with this purely toxic mindset of "how dare you enjoy this" and "you should just ask for help in game," or even threads where, after making a topic stating "I think X, Y, and Z about [job]," they're more oft than not ridiculed for not being "elite" enough to "know anything" about their favored job.
If someone doesn't step in and make the forums great again they'll never be seen as a legitimate source of discourse, nor as a place for where people can come to for useful information and instead continue to be directed to places outside the realm and direction of SE staff. Utterly lawless places where, because it isn't happening on the official channels, there's no recourse for anyone who falls victim to toxicity from the playerbase.