What have you built lately in Python/Node that "the libraries, documentation, education and off-the-shelve solutions are far, far better and move available." ?

I'm not saying those use cases don't exist at all, but I don't think it's as common as you're making it up to be. As a Ruby dev the last 8 years I didn't have many times when some key functionality was only available in Python/Node. I can see it happening in web crawling or data science but those aren't common to every day web development.