first of all, I don't think "most inappropriate languages for frontend development" is a thing, it is just a new way to do web dev that is different to what you used to be doing with. If you don't think it is an approach that you prefer/can accept, you can just move on continue with whatever you like. You should learn from the people who built Brython, they don't like the way how the current web is being built - hence they continue doing what they believe its right, BUT wihtout putting shit on other's people's work.