Straight Shooters,
For what it's worth, as they were developing the 1911 through various prototypes, early designs had no safety at all, then the grip safety was added, and then because the army wanted it so, the manual thumb safety was added. It's my impression that Mr. Browning thought it was just fine with nothing but a grip safety, and frankly I think that would probably be OK if you used proper discipline.
In general though, I think your premise is correct though that many striker fired guns are easier to ND. I think if the PPQ existed in numbers nearly as great as Glocks, you'd hear about them being a big culprit. The reset is too slight in my opinion, and I've doubled it on a range just trying to ride the bump in slow fire.