I've used it for a few professional freelance projects back when I was just starting out during high school/university. The projects typically involved communicating with an Arduino running some physical hardware and displaying some info on a screen/doing very simple control flow (an interactive installation in a conference).

It's great for that kind of a simple thing, but starts to fall apart when you need to do more advanced user interaction - you have to build a lot of stuff from scratch, or at least you had to back then. Also I feel that a lot of the primitives have been optimized for ease of learning rather than what's best for professional code.

It would still be my go-to tool for similar Arduino based projects that just need a quick simple good-looking interface.

I think one of the things that makes a language have a for beginners bias against it is that a great amount of code is written in it by beginners just trying to get some cool shit done, and then when professionals look at the code in the wild they develop a negative opinion.

To change a negative opinion like that once developed you need real language evangelists, like Crockford was for JavaScript.