Also, when it comes to UI elements this is my go to vector editor. Keeps things simple, has good ways of handling units and layout. A pleasure designing custom icons, or quick graphical elements. Plus a great export system to keep things organized.
There are many things you can do besides full app flows, it doesn't dictate how you use it. Really reminds me of early Sketch and how productive I was with it. Its wild that this is open source.
It is my go-to vector editor as well. But a large pain point is that text elements cannot be vectorized or converted to paths or shapes. So your designs cannot be exported meaningfully because there is no guarantee that the receiving end will have the same fonts you designed with.
Exporting to svg may look completely different when opened elsewhere if your designs have any text elements.