Eh. I'm the same as GP, because back before learned that behavior, w3schools had plenty of straight up wrong information. So their question still stands: have they gotten better?
This is false. Paul Irish still has the repository for w3fools on Github. You can verify[1] that Paul Irish himself revised the text. Paul Irish works for Google. There is no reason to think that w3schools paid him to revise the content. There is a closed issue that explains the reasoning[2]
Thank you for remedying my ignorance; I was in fact mistaken. It's too late to edit my comment, but I won't repeat my invalidated claim again.
That said, I will continue to resent and distrust and disparage w3schools because of their shady past. The only reason they cleaned up their act was the concerted efforts of w3fools, Paul Irish et al -- which efforts were only ever expended bc w3schools had succeeded in pwning SEO/SERPs and it was such a distraction and blight on our profession.
It's like a politician gaining office via election fraud / ballot-stuffing, then proposing legislation to improve voter rights; they shouldn't be in office.
MDN is a bit technical at times and doesn’t always have detailed examples a beginner might hope for.