Agreed on all counts.

However, I was more focused on the comparison with building REST APIs in Ruby. I wondered if using Absinthe to wire up all the GraphQL schemas and resolvers was a better experience in itself compared to building APIs the traditional way.

Or maybe it's a tradeoff which resolves positively in favour of GraphQL when a more expressive API is required in contrast to traditional REST when a limited API is required.

An "expressive" API as used above can be roughly understood as one with relatively large number of unique API endpoints.