It's one of the biggest problems of the whole 3d printing ecosystem that so many people are relying on software like fusion or tinkercad that could shut down, lose its free option, and see massive price increases on subscription software.
I wish I could wrap my head around freecad, but we're just not there yet and we may never be. I feel like it or something like it must be our future because until we have a full libre software chain we're living on borrowed time.
The most important thing for everyone to remember is that if you don't fully own the thing such that you can install and run it without asking permission, or if it isn't simply free and open source, then it can go away at any time.