It'll be a marginal effect, but fake clicks impacts the ad buyer, which then impacts their financials and pricing.
The only winner here is the scammers running the fake affiliate sites on which these sticks are "clicking". Or, am I missing some facet of this enterprise?
Another winner is the person who gets to watch cheap digital TV, without putting together a usable antenna and limiting their reception to the broadcast channels that are nearby.
I mean: They just pay the money, plug the thing in, push some buttons, and: TV happens. Right?
What this misses is the person buying the TV stick doesn't care about the impact on the ad market. The bigger problem is residential proxying, because their IP will end up getting used for something bad.