> I think there’s a clear point in project size where the joy of writing code has to be deprioritized behind maintainability and simplicity, even if it becomes less fun to write code that way.

I completely disagree. Joy of writing code must always be a top priority, also in large codebases. There are enough examples of where Ruby (on Rails) is used in large codebases with GitHub, Shopify, etc.

I guess it's a matter of personal match, too. Some people match better with TypeScript, others better with Rails. Nothing wrong about that.

I'm aware that they use a heavily modified version of Rails, but it still is Rails in the fundament.