If you are used to using F360 or SolidWorks, this is the version of FreeCAD you should be using. It doesn’t have the TNP problems that the main branch has. Of course, just like commercial CAD, it’s possible to break models by deleting references, and you’ll have to fix them. Experienced users of CAD know this is always possible.

I’ve been using RealThunder’s branch of FreeCAD for a few years and I’m able to do whatever I want, pretty much just like I do in SolidWorks in my day job. Most of my time is spent in the PartDesign workbench, which is really what most people designing for 3D printing should be using.

Remember that you’re using software built and maintained by volunteers. If you want constant improvement, you’re better off paying people whose sole job it is to work on the software. It’s up to you to decide if it’s worth paying for.

I also have this question. What is so different about the workflow between FreeCAD and other 3D CAD software? If you can do one, you can do the others.