This is more or less a TCL version of Node's Express.

I'm not necessarily advocating for that... but what on earth does anyone's choice of server-side framework have to do with the "user-friendliness" or "familiarity" of the client-side UX?

You can serve up a bleeding edge Vue.js app from a PHP backend, or you could serve up a bowl of jQuery spaghetti from Rust or whatever new language comes out next week. These matters can sometimes be tangentially related, but are largely orthogonal.