They're facts, but they aren't helpful on their own. The article is about convincing Chrome users to switch to Firefox. If all you do is criticize Mozilla - no matter how much they deserve it - then you are signalling to users that they should stay with Chrome. Despite Mozilla's many problems, I'm sure you'd agree that Google is even worse.

An alternative to Firefox needs to be offered at the very least, or all you're doing is helping Google keep its iron grip on the web.