Critics finally woke up ?

I agree, there’s only a few that are mediocre.

Probably Thor: The Dark World and Captain Marvel are the films that spring to mind.

Everything else has mostly ranged from good to great. If Eternals turns out to be mediocre then so be it but at the very least it looks impressive visually.

Typo, correct it for you:

Most are mediocre, a small few brilliant.

I'd go as far to say that the first Iron Man was near brilliant due to the sheer novelty of a modern super hero narrative. Everything after has been a rinse and repeat with a cup of cheese added to every subsequent serving.

They have zero brilliant movies. Some are good, most are mediocre, some are terrible. If you'd like to list which ones you consider brilliant, please do so so I can laugh at you

" they're all the same"

This is such a weak argument.

Personally I thought Captain Marvel was significantly worse than the Eternals.
Eternals is ok, probably bottom 5 of the MCU but not an embarrassment.

Iron Man 2 & 3 in the bad is reaching. Put in the medium one.
Really "bad" I think only Thor 2 and Captain Marvel, to be honest. Even Age of Ultron had good moments.

I'd place Shang-chi in the good, Black Widow in the medium, Eternals between medium and bad, Spider-man Far from home in the good.