And maybe this will help - it wasn't a group targeting another group because there wasn't a group to target.
It wasn't about individuals or groups or even about opinions. It was general attitudes. As we all know, attitudes vary.
It was about the fact that even the slightest glimmer of hope or something to look forward to would be stamped out. That's how I remember the term dementor started to be used. Someone would make a comment like they thought by Christmas they'd be able to see certain family members and would have posters saying "prepare yourself to spend Xmas alone' ' things will be even worse by then, it'll be flu season too". Wanting to talk about something nice like planning a holiday would get responses like "don't hold your breath, we'll be lucky if European travel is possible even next summer" "ffs OP we're in a pandemic, you've got NO idea how bad things are going to get, this is the calm before the storm"
There were some posters who obsessively checked daily numbers and whenever anyone would idly wonder something like when McDonald's might open again because they were craving a Big Mac and wanting a lighthearted thread about what posters will order from their fave place when it reopens would get "237 deaths yesterday and 600 new cases and you can't wait for McDonald's to open?, your greed for shit food is more important than lives?". Looking forward to pubs reopening would be met with derision and accusations of alcoholism. Wondering when schools might reopen would be met with doomsday scenarios of it not happening for months or years and the poster being told them being too lazy to look after their own kids wasn't a good enough reason to kill teachers.
I was accused of being a liar and some kind of fake news 'plant' when I said my local hospital was virtually empty for the first several weeks. I knew it was because I had many colleagues working there who were bored senseless and gorging themselves on donated takeaways and treats. Because the government and some MNetters were terrifying people into thinking the entire NHS was on the verge of collapse and not that at that point, there were massive regional differences and for every tearful post shared by an NHS worker who was overwhelmed and genuinely so; there were many who were complaining they were losing usual income because there were no bank shifts available because there was not enough work available.
The AD threads were at that time mostly people wanting to talk positively and hopefully about the future or express frustration, without a doom-monger telling them to get used to living a half-life and stop being pathetic and selfish. And ADs being lighthearted by saying things like "sat on a bench in the park today, probably killed 10 Grannies" "opened a package that I didn't quarantine for 3 days, I'll be dead by Friday'
And guess what? Virtually none of the doom-mongers predictions came true.