It's really a media-fueled phenomenon. Twitter made the media lazy and now journalists just look to the latest hashtags to find what to cover and the top tweets for "what people are saying."
If you get #CancelHamilton #CancelGeorgeWashington #CancelJkRowling #CancelJesus #CancelAbrahamLincoln #CancelMLK or whatever trending, and people are bickering about it on Twitter, then the media reports on it as "starting a conversation" or "so-and-so faces backlash" etc. Politicians and other public figures will be asked about it and reply with some generic bromide about "all voices should be heard" or "it's a conversation worth having" (see: Tammy Duckworth).
Well, no, it's not a conversation worth having. All this stuff is ridiculous and angry Twitter mobs shouldn't be able to "start a conversation" nationwide just because 20 or so people decided to get together and be really really angry about something.
Rather than #CancelCancelCulture, we should just #CancelAnyoneAtAllCaringAboutTwitter.
If every journalist got off Twitter, no one would think this "problem" is a problem.
It happens on other social media platforms as well, but Twitter is definitely the worst.