I don't really know how you'd falsify the claim (it's not particularly falsifiable), but I'm open to being wrong... That being said, only using 50% of a language like C++ might be considered a feature and not a bug. ;)
More anecdata my shop didn't allow exceptions in production code until very recently. I've written c++ with no exceptions for a quarter century. Now that I'm allowed to add them, I don't want to. I don't like the invisible control flow. I like how rust does it. Mostly my shop still ignores exceptions unless a dependency uses them.
