Objectively removing this filter will allow more spam on chain, more cheaply and easily than the same transaction would cost through private mempools or paying third parties..
Subjectively, people are arguing other forms of spam are worse SO we should incentivise spammers to use this form of spam.
"The technicals" for me would be core should be increasing the number of filters to cover other types of spam rather than allowing spam altogether because "some types of spam would be less destructive" as Core is proposing. The solutions being proposed are a bad idea, and there has been actual "conspiring" amongst core devs to suppress dissent, which is why you're seeing "conspiracy theories".
From looking at your posts on the topic, your "technicals" are probably a different take than mine, and this "loudest people" argument is actually just you loudly disagreeing.