Qt is a pretty amazing framework (yes, I'm biased). You can write apps in Python, but Python is a clusterfuck for shipping anything cross-platform or any kind of desktop apps.
My vision for LXQt was to very much have a modern desktop (targeting recent tech such as fingerprint readers, wayland etc), while retaining some design patterns from the classic desktop ("classic" taskbar or global menu, icon-based desktop grid, etc) without trying to reinvent "desktop shells".
Working on the desktop doesn't always mean using ancient tech, nor solving ancient problems - FWIW I'm probably younger than the average HN demographic. We tried having/creating solid developer tooling, good documentation, a decent-looking website but there's only so much you can do when you're lacking manpower in every area. Nearly all my time was spent doing developer outreach.