I think it also comes into the language design. If you expect programmers to use an IDE, then language features and best practices can require large amounts of

I think it also comes into the language design. If you expect programmers to use an IDE, then language features and best practices can require large amounts of boilerplate, on the expectation that the IDE will be generating that boilerplate. For languages expecting no IDE to be used, the language itself needs to avoid that boilerplate.