I don't think filtering is censorship.
He is just trolling and some people (including semisol) tried making related changes in core a few months back but failed: https://github.com/bitcoin/bitcoin/pull/28217
Discussion
Yes "filtering" is censorship with hypocrisy. Also the PR you shared is unrelated to bare multisig PR.
Its censorship if your filtering valid transactions as a miner.
Its filtering if your a random node setting your own mempool and relay policies.
It’s pretty straightforward.
My thought on censorship/#Bitcoin
The threads are all subtly different, but they all end up going to the same place “What is #Bitcoin?"
* Bare multisig is related to standard transaction, so I shared that not merged issue.
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