I think the YAML hate is a bit exaggerated. It's not perfect but I would rather write out YAML than JSON or XML.
Besides it seems like this company (Relay) has gone to the effort of making a VScode language extension, which enables autocomplete and syntax checking in the YAML files. Which is cool.
FWIW we didn't make a separate extension, it uses the vscode-yaml extension from Red Hat, you just configure it to associate certain filetypes with our json-schema and custom tags. It is awesome for sure.
Besides it seems like this company (Relay) has gone to the effort of making a VScode language extension, which enables autocomplete and syntax checking in the YAML files. Which is cool.