Serverless code is still a code that you have to write. What exact setvices on aws, gcp provide user management and e2e auth out of the box/or automatic rest api for your database? The same question about all other things that I mentioned?
Anyway, I couldn’t use gcp/aws or any other cloud without data centers in ru region.

I am not against clouds, i used cloud. And managed k8s or managed dbs IN the cloud make it easy to maintain (you don’t need to maintain actually) infrastructure.

I think that supabase (or firebase/ or pocketbase/ or retool / etc.) give you not only maintenance but also high level abstractions and auto generated boilerplate code that can be pretty useful.

Thanks for sharing.