FreeCAD on desktop is much the same in my experience. If LLMs were mainstream a few years ago I would have assumed the UI was 100% AI generated with zero human input besides a oneshot prompt.
When was the last time that you used FreeCAD? Even 18 months ago, I would agree with you that it was a buggy mess, but I tried it a few weeks ago and it was super stable. The UI is still a little confusing, but that just comes with the domain, since AutoCAD and Fusion 360 aren't much better.
I couldn’t get the results described by the intro tutorial 3 months ago, in the parts bench drawing a polygon, snapping was broken.
If Solidworks and Onshape were born after the birth of LLMs, they'd probably be glitchy as hell.