maps.google.com now redirects to google.com/maps
This is a fantastic example of motivated reasoning. This "change" (which apparently isn't even new) can have so many different reasons, some of which are less harmful and some of which are probably worse (privacy-wise) than the one mentioned here. There is no indication that re/mis-using permissions is specifically what they wanted to do here, there is also no example of them doing it right now. Don't get me wrong, there is also no evidence that this isn't the real reason and that they wouldn't do that in the future. But the blog post basically list a single symptom and jumps right to the one conclusion that fits what the author expects.