S&W fans (and I speak as someone who owns over fifty of the things) are the biggest whiny, reactionary crybabies about ANY change in our beloved guns, and we will stretch our arms clean out of our shoulder sockets reaching for a rationale to explain why ANY change is bad.
AMEN!!! It's not just locks either. I hear so many people complain about how much better S&W's were when they were hand-fitted way back when and how they're so much more expensive for an inferior product now. What everyone forgets is a little thing called inflation. If you adjust for inflation, you'll find that S&W's (and most other quality guns) are actually quite a bit cheaper than they were back in the 70's and earlier. Also, if you want a hand-fitted S&W, you can still get one: it's called a Performance Center gun. You'll just have to pay for what that hand-fitting costs (just like you did back in the 70's).