> Ruby sucks in large codebases where conventions aren't well defined

The community is working to improve the outside-Rails ecosystem with efforts like dry-rb or ROM. So you can find plenty of useful non-Rails conventions if you look for them, but if you're doing typical web stuff it is hard to compete with the productivity monster that Rails has become.

> I don't see any reason to pick Ruby over Typescript if you're not using a popular framework. Types save an incredible amount of time when you're ramping up.

I guess RBS and Sorbet are trying to cover this point. I don't know how well they scratch that particular itch of yours as I haven't worked with Ruby for quite some time.