on the other hand - my automation was based on not wanting to spam services but provide the minimum level of content posting and regularity to benefit from algorithms that boost content based on the poster's engagement level, automation that wants to spam cannot benefit from this because slowing things down to show as if it was made in real time by a human (with fully non-headless browser etc.) does somewhat defeat the ability to spam like a machine.

I think the key here is that as much as some AI doomsayers don't want it to be the case, and even as much as a lot of people would claim to care, most people won't care enough about whether or not they're consuming AI content or human content to for it to be worthwhile investing all that much effort into stopping automation.

What matters a lot more is to stop abusive behaviour and low quality slop - whether or not that is written by humans or AI.

And working to detect that is a lot more tractable problem than trying to stop automation.