On: Recent version of Handbrake download infected with...

[vertex-four]

That does not modify global state - it creates a new state from the old one + your modifications.

[dom0 → vertex-four]

In other words, it modifies global state.

[vertex-four → dom0]

I expect that your issue is more with the fact that there is a mega state object that contains almost everything - not that it is somehow global, which it isn't. You can't access it unless it is passed to you.