Having recently had to take over a GraphQL + Relay project in the last ~6 months, I agree with this. When things work (e.g., the frontend/backend magically stay

Having recently had to take over a GraphQL + Relay project in the last ~6 months, I agree with this. When things work (e.g., the frontend/backend magically staying in sync) it feels really great. But with the amount of tech you're throwing at the problem I found it difficult to learn (the ecosystem is immature, the documentation often sucks, your problem space grows with GraphQL + GraphQL client of choice + web framework of choice). I found the bugs and opaque performance issues to be harder to track down. I'm sure that with time and mastery these problems will resolve themselves, but I'd much rather spend my "cool stuff budget" on tech that (IMO) provides a significantly greater benefit for the inconveniences caused.