There will be a lot less mental overhead in statically typed languages, thanks to sane / functional autocompletion and a lot of information being abstracted away into types, so on that I agree. The other part may be that more loosely typed languages have a tendency to be less strictly structured, but that depends on the project.

The project I'm working in atm is neatly structured and at ±60K, but you definitely see certain team members knowing more about one part than the other. We've also started a POC to start moving to Typescript for the more critical areas of the application (services, data models).