Well the readme states the following:

Solvespace on the other hand gets the workflow part right, but falls short by not importing STEP and the geometry kernel not supporting chamfers and fillets.

So I assume that's where that comes from.

Source: been there, done that.

For years I agreed with you - I tried FreeCAD multiple times, different versions, always sucked.

Then I watched this video [0] and discovered that v1.1 is different - and that it's good enough for solid reliable hobby usage. It's still a touch frustrating in a few areas (text, for example) but I've now switched over to it completely.

[0] https://youtu.be/VEfNRST_3x8

SolveSpace - https://github.com/solvespace/solvespace

Awesome because you can build a model, expose the parameters, and allow web users to generate a model to fit their parameters.