I agree that Inkscape handles beziers much better than Scribus but then I'd expect it to. Inkscape is for vector illustration while Scribus is for page layout.
Scribus does some things differently but it's not so different that you can't switch between the two. I haven't noticed Scribus doing anything "illogically", just a bit differently. (Unless I'm so used to it that I've forgotten that I had to learn to do something unusual.)
If someone is used to working with Inkscape - or something similar - then they'll probably keep using that for vectors and import them into Scribus. On the other hand, if someone isn't used to another application then they don't have to learn anything different; they just learn how Scribus does things.
There have been various improvements already asked for in this area - moving multiple nodes, snapping, shortcuts, etc. - so, hopefully, we'll see more good stuff coming soon.