Fighting the problems of Qt bindings, Qt, Qt's build system to me is just not worth it.
If someone is a Qt and C++ expert, then maybe, but it still seems like an uphill battle compared to web stuff, which to me seems better supported on all platforms.
Using a cross-platform backend + UI stack seems like a best of both worlds. ~5 years ago we developed a kiosk for car washes (you could buy a membership online, then use the QR code, but it had also devices to accept coins and banknotes), backend was Rust, frontend was Angular (the kiosk ran Firefox kiosk on a touch screen, and there was even a tablet at the counter that ran an app that was a bundled webview basically).
It worked well on different devices in different sizes, updates were as simple as "yes restart the thing".
Interestingly we had a C++ project shortly before that (number crunching for music recognition, so not really something that you'd do without a high performance language). We picked Rust for the next one because it seemed easier to implement the state machine required to manage the connected devices & clients in it than in Python.
I absolutely don't miss C++ or Qt (or PyQt, or MOS files, CMakeLists.txt shudder)
If someone is a Qt and C++ expert, then maybe, but it still seems like an uphill battle compared to web stuff, which to me seems better supported on all platforms.