Because in those languages:

. dependencies are carefully considered by users

. dependencies are not added recursively

. dependencies try to be dependency-free themselves to assist with the previous point

. dependencies are not blindly nor automatically updated

. dependencies solve important domain problems, they are not trivial one-line-functions

. dependencies are typically developed and tested by a known team or company, which you trust, not just someone random

. binaries can be signed

. support contracts are a thing

. etc etc etc...