I don't think you can blame this on Reddit alone, as basically all online spaces (and sadly, some offline spaces too) have become incredibly toxic in that they

I don't think you can blame this on Reddit alone, as basically all online spaces (and sadly, some offline spaces too) have become incredibly toxic in that they constantly push divisive topics even when many participants would much rather avoid them. It happens even here on HN (covid, twitter, Israel/Palestine) and definitely on Twitter, in any news org's comment section, etc. The thing that changes is often the exact flavour of the groupthink, but even on Reddit itself, this depends heavily on the subreddit. r/worldnews, for example, skews mostly pro-Israel and is also one of the larger subs.