Good gear placement and hold testing are two things that could have prevented a ground fall.

I didn't see any better placement than the poor cam, but I could have investigated further to the right before committing to the move.

I was only 1 move away from the curving crack and lots of solid gear, so that swayed me into taking a chance on a committing move above poor gear.

I knew that if the gear failed it would be a ground fall, but the move was easy.

I carefully tested the rock on the way up, and found it all to be solid, but then I did not test the hold that I pulled on.

If I had tested it, it would surely have failed and I would not have committed to it.

The other obvious lesson is route choice. In fact crag choice. Given my experiences on Long Quarry Point main slab (two previous low level ground falls and lots of holds breaking), does the quality of the routes on that face warrant the risk? Perhaps not.