Where did you find this information?

F12 o Ctrl+U on most browsers

Most browsers are mobile so that won't work :)

I was hoping there is some technical explanation how the compilation step works (especially what do they do to event handlers) but their documentation is very light on details.

Firefox on android allows you to inspect source.

You need to prefix the url, ie.

    view-source:https://news.ycombinator.com/

If you actually do the demo project thing, you'll find a .web directory, with all the next-js code. :)

We do use nextjs but I think what's the most handy part of Reflex is the simplification of state management and event handling so there is more complexity to the framework.