Knock on wood, I have not used them in quite a while.
They're the absolute worst. Doc links will go in circles, redirecting you back to where you just were, API documentation is out of date - or worse it's out of date and doesn't tell you until the end of reading if it even tells you at all.
Not even mentioning how everything is in permanent "alpha" and "beta" state. Things are never finalized so they can get away with changing the definition on a whim and say "sorry it was in beta, now it's in beta5". I had to rewrite Pub/Sub code at least once a month because they changed their spec on that, and that was one of their "most finalized" products.
Fuck GCP, I will actively avoid jobs that code on it now. If you want enterprise customers, provide an enterprise product. This isn't chat where you can rebuild it every year because your marketers are bored. These are enterprise products that companies depend on.