I'm slowly making my way through the learning curve for FreeCAD. Already in far enough that I have no plan to touch Fusion again.
Agree the UI isn't great, but once you get the tools organised how you want them and get your head around the slightly different ways of doing things it is super powerful.
Watched this a few weeks back. My wrecked back and neck cry at the ergos haha.
I love how casual some of them are leaning back on their chairs, keyboard on lap and looking sideways at the screen.