My SaaS backend is a GraphQL Server that has single-handedly saved me tons of hours for integrations and coding. The first iteration of the app was using rest and that was a pain. Hitting multiple endpoints to get all the details of an order is not something I miss. On top of that, I get a beautiful playground that acts as a query builder and documentation.

Have you actually used GraphQL in production or for a wide-scale project? A lot of these criticisms for GraphQL comes from people who have played with it for an hour and determined it's not good. Give it a real chance and you'll see why big companies are using it and understand why the ecosystem is growing so fast.