I didn't see it back when I was doing Qt, but writing a Qt app for every platform is hard. In theory you can have Qt apps on Android, iOs, Linux, etfc but in all fairness, it is just too much of a hassle. Big headache with toolchains, dependencies, it is just not worth it nowadays.

"Write once, run everywhere" was a nice motto for Qt and I even bought it for a while but yet again does not work in practice. Flutter, on the other hand, actually works. Sure it doesn't have all the bells and whistles of OS integrations, but it is getting there. I hate the language itself, but I can't deny that it works beautifully.

If you think about it, the Qt way of doing things was quite novel back in the days and had allot of promise, but I feel that the main thing that held it back was C++ (still no official package manager and no cool CLI tools in 2021!!). I am sad that I left Qt behind since it was an amazingly modern platform when I used it, but I am glad I don't do C++ anymore.