That leaves us with true open source options, of which there are still plenty of options, although most of them based on Blink, WebKIt or Gecko.

Never heard of them. Getting people to run is a part of the plan, if the NPCs don't know where the echo chambers are (NOT shills, NPCs) nothing is achieved. Also nobody cares about those groups and 90% of the time they are infiltrated by the far left or far right (Hint: Freenode and Linux).

So far the Mozilla foundation is not (yet) doing similar moves, but it is also easily taken over and controlled.

Thing is that it's either Chronium or Firefox. This is the UN Internet and these are the only two choices you have under the UN's Internet creature system. There's no way to escape it, you can't just fresh upstart a browser by this point. And chances are Firefox doesn't need to be taken over because it is a part of the system, the switch just needs to be on and all hell breaks loose.