Can you give an example of a left-wing person suggesting we abolish the 1st amendment. I cant say ive ever heard someone on the left just straightup be against the legal definition of free speech.
Only way i can see the left being anti-free speech tends to revolve aroudn their "pro-ban anyone who disagrees with me from scoial media" mentality. But that has little relationship to the legal definition of free speech which offers no protection in a private setting.
Regardless if you agree with them on that my point is, their attacks tend to be against private freedom of speech, not the legal definition around public speech,.