You seem to be implying that MDN is no longer the best resource for reading documentation about web technologies. Outside of reading the W3C RFCs, is there something better out there?
No there is not, it’s a situation where everyone is burying their head in the sands. No matter how many downvotes I receive it simply does not change the fact that firing a majority of your documentation content team will undeniably have a huge impact on your documentation content.
One thing w3schools has going for it are the elaborate examples. That really helps when it's a new concept you are trying to learn. Mdn is better for looking up syntax