And how many of those saved weeks are being spent fighting draconian licensing software? In a past life I had a few architectural firms as clients and actually getting AutoCAD licensing shit to work was a huge pain point.
You need to balance those weeks spent fighting licensing issue (seriously?) against the time that's lost by using a piece of software that is a nightmare to use... if it doesn't crash. Which it does all the time.
Admittedly, it's been 2 years since I last used FreeCAD, but I've spent literally more than a hundred of hours with it trying to make it do what I wanted it to do only to come to the conclusion that mechanical CAD probably just wasn't for me.
And then I tried Onshape and, surprise, it wasn't me after all.