I know why this became big, and it isn't "oh they're a bunch of racist backwood inbred ignorant anti-semite homophobe hicks."
The major social media platforms, they are given special legal protections since they are platforms and not publishers, so they are not responsible for user content. So do smaller platforms, like this one. That is why when one poster on this forum posted about how he had a right to kill minorities, the owners were never going to get in trouble for it.
Those platforms were quite happy to post "Fuck Trump" since they were platforms and not publishers. They are also quite happy to censor "Fuck Biden" even though they are platforms and not publishers. There is absolutely no double standard in the behavior of the platforms, and anyone who thinks there is a double standard is an alt-right conspiracy theorist. Probably a racist sexist homophobe transphobe as well.
There is one loophole though. All of their word filters and automatic censors don't see "Let's Go Brandon". It is quite invisible to them due to the lack of keywords, and lack of warning words that would trigger a second level automatic search. The platforms, that get legal protections because they are not publishers, are caught entirely off guard by this and cannot figure out how to stop it without some major reworking of their automatic censors.
A couple years ago I did a test on Facebook and posted "Eric Ciaramella" just to see how long FB would leave it up. One week later the post was down, no explanation, no warnings, no strikes, just missing. I also once shared a pic of Jeffrey Epstein standing by himself to see if FB would give the fact check of how there is no evidence of improper behavior by Bill Clinton. They did. Bill Clinton wasn't in the photo though, and I didn't add commentary.
The platforms, that aren't publishers, they certainly don't manipulate what is posted on the platform, since they aren't publishers. If they did manipulate what is posted, then my post about Eric Ciaramella would have been taken down and they would have applied that fact check to the pic of Jeffrey Epstein. But they are only platforms and not publishers and any suggestion to the contrary is a conspiracy theory.
Those ways in which they can manipulate results, which of course they don't do, were caught completely off guard by "Let's Go Brandon" which is why it is so popular among those who want to say "Fuck Joe Biden" the same why others used to say "Fuck Donald Trump".