Coverity is pretty good about finding these kinds of bugs. Is there a reason why a project as significant as Xorg isn't taking advantage of their gratis access for that tool?
And they’d rather spend their energy on giving you a compelling reason to switch, rather than using it to add to the reasons for staying on a project they now consider obsolete.
You may disagree with their assessment, but you can’t blame them for how they decide to prioritize.
They certainly say that to people a lot. Oftentimes the person saying it is young enough that I wonder how much time they spent working on X.
So I doubt age is the deciding factor ;)