Agree. I've always thought that PostgREST is an interesting project for some niche use-cases and teams. However, his argument about replacing GET request handling with a new tool that lives outside of/alongside your existing application architecture is not a particularly compelling argument. With properly-factored application code adding a GET (list) or GET-by-id is fairly trivial.
The only complexity I've ever run into there is implementing a pagination scheme that is not the typical "OOTB framework" limit/offset mechanism. I still don't think this makes the argument much stronger.