Absolutely. Trevor Noah on The Daily Show just did a whole bit insulting Mitch McConnell’s appearance.
(If you do not believe that The Daily Show and other political comedy shows like Colbert, Samantha Bee, etc. fill the same entertainment+information niche for liberals/the left as Laura Ingraham, Rush, and the like do for the right, I believe you may misunderstand them.)
Drawing parallels does not mean drawing equivalence. Right-wing news entertainers are absolutely worse about this, and they have been bouyed by the politicians they support like Drumpf that create the space for it. So far, Democratic and left politicians are largely refrained from this, and that is good. I hope that continues.
I think liberals and the left are making great progress on pushing the culture away from insulting and judging people of their immutable characteristics. I would love to see that extend even further to be unacceptable to do even for people you disagree with politically and even people you think are horrible.
“They did it first!” and “they do it worse!” isn’t good enough for my kids, for myself, and I don’t want it to be good enough for the political parties and communities that I support. We can do better.