That’s because it’s LLM.
We taught them.
One irony now being that that form of skilled writing is inevitably and sometimes falsely accused of being machine-written.
It takes much more skill to write concise than verbose.
If you are writing to explain, being concise is a useful asset. If you are writing to entertain, or for pleasure, verbosity and flair can be better.
I don’t get the feeling the author is trying to convince anyone of doing anything. They are sharing their experience, probably writing for themselves above everyone else. They should do it however they prefer.