I support this claim. Also the title already includes everything relevant compared to „we made Postgres 20x faster“.

On the other side if dev(ops) does not know that local storage is faster than network/cluster filesystems…

I feel its hard to prove that either way, but even the content of the article itself is full of LLM generated text, for e.g. here is one line from the conclusion "The bottom line is deliberately narrower than the title".