I have but one S&W with a lock, my 627. It's one of my competition guns, and gets fired often and as fast as I can! The lock has not failed. It's a non-issue
The internet is full of haters, no matter what, they find things to hate on. I like to see the glass half full. I will continue to support all US gun makers, S&W included. They employ a lot of good folks up there in Springfield, lots of them just like me and you
Here's my 627, warts and all