You're not looking hard enough.
Also, see the filth spewed out about any woman who is a minority Democrat congress member.
> anti-Biden people had to adopt that Brandon slogan thing
They chose to adopt it, your belief that they "had" to is not in alignment with the facts.
Given the obvious lineage of "Let's Go Brandon", if your assertion that they chose it to avoid being moderated/banned/imprisoned was true, then why isn't that happening when they mention Brandon? Because we all know what that means. Twitter knows, FB knows, the FBI knows.
Stating that this was forced upon them to avoid some mythical persecution carries the implicit assumption that everyone is an idiot who has no idea what they mean, the logic is severely flawed.
What I really enjoy about the whole Brandon thing is that their "clever" in-phrase has been co-opted and suborned by young Biden supporters, check out /r/DarkBrandon.