Some of this may be potentially true for TypeScript programmers. I have no idea, since I never used it. However, sensible division of code into small files can

Some of this may be potentially true for TypeScript programmers. I have no idea, since I never used it. However, sensible division of code into small files can have enormous benefits in C++. Throwing everything into giant files makes it annoying to write and run unit tests, or to reuse part of the code in a new translation unit. There is a noticeable difference between working in a code base where the tests link and run in milliseconds, compared to ones where it takes a long time to compile and link them.