The more languages you learn, the more you realize they have more in common than not. At some point it’s time to stop learning 20+ languages and start building stuff. I never said to stop learning, but be very careful what you spend your time learning. If you can be world class at Python alone, able to solve just about any problem with it, it’s better than 100% knowing many languages. Knowing a language doesn’t mean you know all of the standard libraries and third party libraries, much less solve challenging problems efficiently.