[hiepph]

For the case of Javascript, (I think) it followed "Worse is better" principle. It's been trying to be as practical as possible. And it's everywhere even though it was not really great (until new standards and Typescript come). So a new joiner would pick Javascript so he/she can have a wide choice of possibility later.

Same things are happening with Python. And if I have to be honest, if I come from a different profession and want to change my career, I would pick either Python or Javascript for my first step.