I get comics have addressed social/political issues (at least Marvel does), but they use metaphor, allegory and such. What they are doing here is not that, it is straight up taking a real world political issue and changing a name and slapping it into lore regardless of ramifications to lore or if it fits. It isn't allegory or metaphor. It's shoving it in people's faces. It's why so many modern shows that do this fail, while older shows did it in a way peole didn't instantly recoil at the preachiness. This is is being preachy, which does not go over well with most people regardless of their political affiliation.
Compare the newer vs original shows "Charmed". Both addressed feminist and other social issues, but the poor writing of the new one made the series fall short and end after far fewer seasons. Or even original series of Doctor Who vs the last couple of The Doctor's regenerations, where the policitcal issues are being shoved blatantly at people and so they are getting kick back. The old show did it via parralels and allegory. Using comic books, if Marvel had made all the X-Men black and showed the segregaton of white vs colored it wouldnt have gone over so well. You can say it's because of the times they had too, but when things do it now it doesn't work either. So it's less about the mindset of the time and more of the methods used for the message.
Not only that this isnt even being done in a good way, it's just retconning history and expecting everyone to just accept it as it's always been this way or that the reasons are there or that they are just vague snippets without any real build up, and we just need to believe it.
As for BWI I think most people have already figured they are up to something, most likely they will end up being Malta. But the way they're being shoehorned in doesn't help them get a positive view. Hence my suggesting a build up to why/when they get there instead of "They've been here 5+ years after replacing the PPD." IF the zone was just now released then it would have worked better, but it isnt just being released. A build up with a preexisting zone also lets the story be more naturally growing. Think of it like with Galaxy City, would it have made sense for them to say "Oh galaxy was destroyed 5 years ago!."? No it wouldnt have made sense, and the impact of a zone being destroyed would have been muted by such action. The same type of story situation is here now with KW. Building up to it creates far more suspense, mystery and intrigue.