I have seen it myself, from my own system. Firefox, almost impossible to use the web due to non-stop bot checks by CF. For the same session, same site(s), I give up and use Chrome, with all the same browser extensions, and I sail right in. Multiple times.
Suspicious traffic is using Firefox, because Chrome browsers are 90%+ of the traffic. And the rich mac users have a special mechanism for bypassing them as your article outlines.
Using Firefox is the internet equivalent of DWB.