Here is the thing about liberals. Many are actually really smart, many are very nice, and many are very similar to us in beliefs.
Throughout the early election and 2016, many Bernie Bros. we’re actually really kind to the Trumpers. Hell, Yang actually wanted Trump to not get impeached if I remember. For a lot of the elections, progressives and SJWs were a bit separate, in 2016, Hillary has the SJWs because woman vote, in 2020 it was likely Pete or Kamala. Bernie became a symbol during Floyd riots and after Biden, a white man, became the nominee. For the most part, the progressive community and Trump seemed to intermingle, and Bernie Bros did show up in 2016 to vote Donald.
As for Biden voters, many are just scared of Trump. You have to come at this with the angle that much of Biden’s base is in their 40s-50s. They are Gen X, a group that rebelled against the right with Clinton and hang on to news sources and tv programs that gave them the facts during the Bush era. They are done “growing” in a sense. Their lives are complacent now, they do not want revolutionaries like Trump or Bernie to mix things up. Obama kept them calm and without a new scandal every second unlike Trump. They are basically clinging to nostalgia, which is why the 80s have stayed in the media for so long. For the most part they seem stuck in the past, and their interactions online are relegated to FaceBook only as they view the rest of the internet as weird or misinformation. You cannot challenge their beliefs, they are unwilling to budge as life should be this way. Again, they are not evil or dumb, they simply just get caught up in an old way of life because that is how life always was. They want to be comfortable, and Trump threatens that.
I think we are very harsh on the Dems, most are just getting by. There is a high vocal of loons that can sometimes sway the non-crazed, but many are able to see stuff like the white guilt education as too far, even with TDS. I think the news could flip. Many of the old guard still watching is establishment types that would enjoy making fun of crazy people who do not want Obama #2. The news could pull in some views.