> Would you recommend RedwoodJS for green field projects?

IMO if you want to run PostgreSQL, React and GraphQL with the least amount of friction and decision making, RedwoodJS is great choice.

> How would you say an opinionated framework like this works in the medium to late maturity?

If you run a frontend-heavy and/or TS/JS shop and don't mind the tradeoffs of something like Ruby on Rails, then I see no limitations to building whatever you want with it.

> Is it easy or even possible to switch out components with more "enterprisy" solutions?

Not sure what that would look like, so I can't comment.