Sig Sauer had a potentially lethal design flaw identified in 2017:
https://www.omahaoutdoors.com/blog/sig-sauer-p320-fails-drop-test/
That was immediately fixed. I owned two P320 and currently have a P320 X5 Legion. Perfectly fine guns, clean, and simple. Like others in this thread, I think this was for holster control or bad handling. The gun didn’t shoot by itself.