I'm honestly confused as to what your gripe is. I've done it all, OpenAPI, graphql, gRPC -- what exactly is difficult observability wise? Can you provide some specifics as to what is problematic?

HTTP is broad, and some things are easier to observe than others. Something like streaming or websockets is by definition more complex than the most basic possible HTTP request/response. Your complaint boils down to "using features makes observability difficult", which is obviously true in some sense, but you're dismissive of what those features unlock.

You must despise graphql.