I would love it if I could process the actual contents of the feed with some rules... for example "Hide tweets about politics or woke/anti-woke culture wars or generally things designed to wind me up including replies to my tweets".
The limitation here is that the AI agent sees your page once and has to write a static script that applies generically.
What you're requesting would require an LLM call on every page request dynamically (rather than a static generated script) to categorize the content. It is possible and something we want to achieve, but we're not there quite yet.