> Some users may knowingly install this software on their devices, lured by the promise of “monetizing” their spare bandwidth.

Sounds like they’re targeting networks even if the users are ok participating in, precisely what you’re saying is ok.

As for malware enrolling people into the network, it depends if the operator is doing it or if the malware is 3rd parties trying to get a portion of the cash flow. In the latter case the network would be the victim that’s double victimized by Google also attacking them.