Censorship is targeted, filtering is not. They did not target Samurai specifically or even all coinjoin transactions more generally.
There seems to be a fud going around about coin join and op_return
note1zx8usyfff3xwmc67mwasuycf6dtzggrslpjwpeps7alvrf7glmjslq07pn
note1zx8usyfff3xwmc67mwasuycf6dtzggrslpjwpeps7alvrf7glmjslq07pn
What did I get wrong? There are other coinjoin services whose transactions don't use OP_RETURN at all and get mined just fine. You cannot say that the filter is targeted specifically at coinjoins, because it clearly isn't.