> Of course, a few of them of say they understand object lifetimes so well, they they don't need the static checker!

There is a difference between understanding lifetimes and being able to keep track of them. I have a lot of objects in my more than 10 million lines of code. Most of them have simple lifetimes that are easy to track, but a few for reasons (which may or may not be valid - often the reasons are it was built in C++98 and updating to modern lifetimes is hard when it is used all over) have complex lifetimes that are tedious to track. It isn't that I can't, it is that I get bored/make mistakes and the static analyzer wouldn't (Or course C++ can't be statically analyzed, but if it could the static analyzer wouldn't fail for the same reasons I fail)