"Thousands of scientists are cutting back from Twitter"
Essentially, a survey published in Nature about twitter usage among scientists dropping, in part, because of the phenomena mentioned in this New Yorker article.
Eg:
"Žiga Malek, an environmental scientist at the Free University of Amsterdam, mentioned in the survey that he had started seeing a lot of “strange” political far-right accounts espousing science denialism and racism in his feed. He has to block them constantly. “Twitter has always been not so nice let’s say, but it is a mess right now,” he said."