Same for me. I will add to this that probably very few know how to implement GraphQL on the server-side *efficiently*, or, put differently, most have a gut feel

Same for me. I will add to this that probably very few know how to implement GraphQL on the server-side *efficiently*, or, put differently, most have a gut feeling about how hard to manage it can become. While frontend implementations look good, GraphQL sure looks like an unsolved problem on the server to me.