Maybe they just don't know any better
Where is FreeCad in this one? I’ve started using it after buying a 3d printer, and it’s awesome what that piece of software lets me create.
Got any links to learning? Ive gotten pretty far in fusion360 but am trying to transition and found f360 let’s me be too lazy or sketch centric/doesn’t require parametric rules

MangoJelly Solutions on YouTube

Freecad requires very different approach to design than fusion, try not to assume how things work

Also Deltahedra.
Check out MangoJelly on YouTube. The guy has hundreds of tutorials for FreeCAD and they’re great
Ive found it useful to search for a freecad tutorial for any object on YouTube and follow it, making an actual thing. Even if that thing is not of use to me, I learn from building it and use those concepts in what I want to build.