Trump's rise to prominence has built an endemic culture of using threats as a censorship tactic. Though this has affected people of varying ideologies, the Trump team has monopolized this strategy and aimed it viciously at liberal women and people of color. Just as legislators pass laws and courts uphold them, Trump's role seems to be to threaten his opponents into submission when he's on the verge of losing his battles.
Blaming Trump is ironic coming from leftists who have been threatening — and in some cases physically attacking — ideas and speech they don't agree with as part of their notorious cancel culture. It's conservatives who have to watch what they say for fear of having their lives and reputations ruined because of their views on politics or religion. Until leftists learn to be more tolerant, this problem will continue.