To nitpick: the blog post was triggered by a single instance of it happening, but while he doesn't go into specifics, he says that all the top tier firms are do

To nitpick: the blog post was triggered by a single instance of it happening, but while he doesn't go into specifics, he says that all the top tier firms are doing it, which obviously means there's a bunch of instances of this. And one of the common criticisms he got was "everybody's doing it", which suggests it's even more widespread than that.