I think the clear issue is (as usual) a failure of Blizzard and Activision Blizzard to provide any active moderation (I assume someone has been banned after being repeatedly reported for hacking after months of abuse but I have no proof of that).
Even Minecraft anarchy servers have more moderation! In my experience those have a much higher % of attention seeking toxic ppl. BTW owned by Microsoft so I am sceptical any improvement will come on that front.
If you have spent more than 24 hours browsing the interwebs you should be used to seeing high level discussions like the examples below.
In conclusion if you spot a new person send them to the Coach Pupil League and they will have a blast!
Examples of toxicity: 1 image is from Today (took me 3 mins to get it cuz I had to update SCR), 1 image is from earlier pandemic times. See if you can tell which is which. Also 1 from Minecraft to compare (timeless).
+ Show Spoiler +