Always the same rant of people profiting open source without understanding it.

This guy is free to select whatever license it wants for his code. But don't expect profiting from the open source (in the common sense of free software) brand if you don't want to respect it's principes.

Would the package be as successful? Have has many users, contributors, ... The author is free to test that if he wants but his rant isnot justified for the whole open source world.

Also, I'm quite sure that he is also a freeloader happy to benefit without contributing. Even from big companies. I'm quite sure that he never paid or contributed for npm, GitHub or his IDE for example...