Actually, I never even liked M&Ps until the Shield came out. I am a Beretta 92 nut with 9 of them and a PX4. I did once own a SW99, which was a decent gun.
This is not an external safety issue. Some like safeties, some do not. I don't mind them, but do generally like DA/SA guns.
However, as stated before in numerous posts - MANY semi autos of all makes and models will not close the slide automatically if you pull it back a little. And, I've personally had experiences with new leather holsters that can push the slide back when you insert it into the holster. With some break in, this goes away.
If the original guy who started this has a pocket holster that is NOT made out of leather, then he needs a new holster - as nylon and kydex doesn't normally need any break in. Then his holster is too tight.
I have tried all sorts of stuff with my shield since this first started. I pocket carry mine everyday outside of work. Before that, I pocket carried a Kahr PM9. NEITHER gun has ever had the slide come back in any shape or form while sitting in my pocket holster.
This is not about S&W koolaid. I don't have any, actually (I;ve got tons of Beretta koolaid, though

)
Its about people who probably don't have much experience with semi autos, looking for a problem that doesn't exist. Then creating their own solutions that probably aren't a good idea.
Now, not every gun is perfect. Will there be some LEGITIMATE problems with the Shield - yes. EVERY gun, no matter how well made, has problems. I had an issue with a $3k 1911 a few years ago, right out of the box. I waited 12 months for it to be built too. People have issues with Glocks, Sigs, and even my loves Berettas. Issues are issues. Sometimes brand new guns have teething problems. Ruger has had this a lot in recent years.
But THIS supposed "problem" is ridiculous, IMHO. So yes, I am making light of it..