What a cop-out.
If you have a contract with an advertiser and then you discover they are scamming your customers do you,..
a) End the contract and find another advertiser that doesn't use such nefarious means of deception.
Contact the advertiser and tell them they must stop force installing crapware, or you will find another advertiser...
c) Do nothing and blame someone else.
Yep, a cop-out.