Without even looking at architecture, they went from lisp to python to node. While I certainly wouldn't have chosen any of those languages, it seems like every step they took was a step backwards. What's next, tcl/tk?
React and Node are well engineered and in demand, plus you can even use it to build mobile app with React Native, which is in demand too. Don't listen to advices from anonymous random guy from the internet, doubt even me.
Keep learning those two, they are valuable in the job market. Don't lose core focus on language (js) vs framework/tooling. Knowing the core language is the adaptable skill.