I didn't look too closely at the code, but have written a toy browser in just this way.

The problem is that QT on targets rarely gets updated, at least not as fast as Chromium.

I had the misfortune of targeting old RHEL systems, whose QT was missing a lot of what I needed.

So then you get into the game of compiling QT yourself, and in my case having to compile python as well, etc. It turns into a real mess.

I imagine modern desktop systems are a bit better today, but am curious how the author solves that(if at all).

Something like Docker existing at the time probably would have been a huge help.