I seriously doubt people didn't write blog posts or articles before LLMs because they didn't know how to write.

It's not some magic roadblock. They just didn't want to spend the effort to get better at writing; you get better at writing by writing (like good old Steve says in "On Writing"). It's how we all learnt.

I'm also not sure everyone should be writing articles and blog posts just because. More is not better. Maybe if you feel unmotivated about making the effort, just don't do it?

Almost everyone will cut novice writers and non-native $LANGUAGE speakers some slack. Making mistakes is not a sin.

Finally, my own bias: if you cannot be bothered to write something, I cannot be bothered to read it. This applies to AI slop 100%.