I personally don't understand the issue with the M&P's thumb safety.
At least if you complained about a slide mounted safety like that on the S&W Gen3 or a Beretta, you'd have some basis for a complaint. With the location of the M&P's thumb safety, a high thumb draw puts your thumb above the location of the safety anyway and the rotation of the gun, at Count 2, will naturally bring your thumb down to wipe the safety off....just like on a 1911
At least if you complained about a slide mounted safety like that on the S&W Gen3 or a Beretta, you'd have some basis for a complaint. With the location of the M&P's thumb safety, a high thumb draw puts your thumb above the location of the safety anyway and the rotation of the gun, at Count 2, will naturally bring your thumb down to wipe the safety off....just like on a 1911