You can subscribe to "both sidesism". It's easy to do so
But to do that, it exonerates one of those sides, which has gone off the deep end with its "politics as usual", into something well beyond that.
Whereas the other side is simply playing regular 1950s and 1960s politics as usual.
That's the difference. To give the old "both sides are the same and do the same thing" trope, it fails to acknowledge the acceleration of disinformation and lack of good faith arguments that one side has perpetuated since the beginning of the right wing media echo chamber in the 80s and into the 90s
This just isn't true. It is absolutely true that one side has committed the bigger sins. However, many of them have been in reply to the sins of the opposition. McConnell told Reid he would regret eliminating the filibuster for appointing federal judges to district and appellate courts. He just didn't tell him how much.
I would argue that the disinformation is a direct reply to the politicization of what can, and cannot, secure funding. There are absolutely good findings (rather a lot of them) where the right chooses to turn a blind eye. There are also a
lot of things that simply cannot be researched in this political climate, because the incentives are such that anyone good at their job prefers not to become a community pariah in return for mere filthy lucre. Prestige is a lot more important than cash to most academics. If it wasn't, they would be doing something else for a living that pays better.
Is the left better than the right at the moment? Sure. See: public health, global warming, guns. Is the left playing 1950s and 1960s politics as usual? Far from it. Today's politics don't even begin to resemble an era where both parties had liberal and conservative members, and things were accomplished by working across the aisle. It's two warring tribes fighting over indivisible social issues where the positions are mutually exclusive, egged on by clickbait media on both sides funded by people who watch, and hate watch.
Converse et al were more right than they knew when they said that the public follows politics the way they follow sports teams. The basic problem is that when news went for-profit after the repeal of the equal time doctrine, both sides figured out how to give the public what they wanted. It's as if we had red and blue networks each covering the Merseyside derby. You would hear two completely different versions of reality, with truth somewhere in between.