The problem here, the overarching issue is that the subject complaint about AI slop is actually a bigger issue that has been plaguing America in particular for many years now, and of which the AI slop era is only a current top. The qualities of American writing have clearly been on a precipitous decline for a very long time now, predating AI slop and even spell checkers and computers.

Computers, digital text, and digital information distribution/transportation have made writing and thoughts cheap. Arguably due to what we are surely all aware of, humans rarely value that which is cheap, whether monetarily or in effort and consequential qualities. What people seem reluctant or maybe unable to acknowledge is that predating the current AI Slop, was what could be called Human Slop, low quality, low effort, careless output that was cheap; regardless of whether AI slop now outperforms.

It is why you are justified in pointing out that even in the post complaining about AI Slop, the human has apparently abandoned what would have been common practice in just the recent past, using basic spellcheckers or simply reviewing what was written and also practicing with deliberation; the art and skill of writing, grammar, and sentence structure.

No one is perfect and that is also what makes anything human, somewhat inexplicable and random variation. However, it takes a certain refinement before unique human character becomes a positive quality and is not just humans being sloppy ... human slop.