JS is very popular and has a large user base. But it's not very heterogenous, espacially compared to Python. The vast majority of JS coders are interested in t

JS is very popular and has a large user base. But it's not very heterogenous, espacially compared to Python. The vast majority of JS coders are interested in the web. A few for apps and UI in other area thanks to react native and electron. The rest is anecdotal. There is not an entire banking industry analyzing data with JS. Biologists and chemists do not rely on JS to make their models. JS is not the de facto solution for machine learning. GIS systems are not massively scripted in JS. The cinema industry do not include JS as a core element in their rendering pipeline. No sysadmin every said "well, I know how to provision those 300 servers, I'll make a JS script". Security experts don't reach first to JS for pentesting. apt is not coded in JS. JS is not the stuff that all students will be taught in math classes. If you have a dumped csv to download from an ftp to insert in your database every night, JS is certainly not the first tool that comes to mind. I could go on and on. Not saying you can't do this is JS. Not saying it never happens. It's just not popular to do it. All those tasks match some kind of user base, with different profiles, needs, skills and constraints.