I've only worked with Hasura, but I can say it's an insecure nightmare that forces anti-patterns. Your entire schema is exposed. Business logic gets pushed into your front end because where else do you run it unless you make an API wrapper. Likewise you can't easily customize your API without building an API on top of your API. You're doing weird extra network hops if you have other services that need the data but can't safely access it directly. You're pushed into fake open source where you can't always run the software independently. Who knows what will happen when the VC backers demand returns or the company deems the version you're on as not worth it to maintain compared to their radically different but more lucrative next version.
I think the people who write this off as "backend engineers feel threatened" aren't taking the time to understand the arguments they're hearing