The P320 and the P365 do not share a fire control or a safety system, two entirely separate designs.
That said, I've owned a P320 for four years, without any uncommanded discharge incidents. I don't doubt something is going on. It appears to me to be a combination of tolerance stack, holster design, and operator habits. I was actually surprised that I like my P320, I have a distinct dislike of striker fired pistols. But the P320 and P365 seem to work for me. Do I think SIG Sauer should do something regarding what's going on with the P320? Yeah, I think they do.
The SIG Sauer pistols are not "Glock clones". I actually despise everything about the Glock, there's nothing about it I like. Especially not requiring the trigger to be pulled in order to tear it down. And the term "Glock leg" wasn't invented out of thin air or whole cloth. There were multiple agencies that experienced a 1,000% increase in "negligent discharges" when they adopted the Glocks. There's a guy here who is without a right leg because his Glock discharged when he was reholstering it. It was on video, as it was at a local jail, where he had to remove his duty weapon to enter the facility. He didn't have his finger on the trigger when he put it in his holster.
Again, SIG Sauer isn't without guilt or fault concerning the P320 uncommanded discharge issue. However, I don't think they are the only problem, and I think there are a lot of people with an agenda who are magnifying the issue.