I’ve already seen number 1 happen. I’ve had a completely unacceptable amount of non-nsfw tagged porn hit my front page being posted to various Lemmy.world communities, all by shitjustworks users. I’m getting pretty close to abandoning the platform myself because I don’t need that shit coming up on my phone when I’m just trying to browse
Edit: that said, I’m not going back to Reddit. I’ll just abandon this type of site altogether and spend more meaningful time with my family and read more books