Running the numbers is exactly what patent trolls do so yes it seems like a valid approach.

Reading down the Twitter feed from the troll in question shows a Tweet of a discovery by them and their lawyer that it's cheaper to deal with the court costs of trafficking 15 kg of cocaine than to legally assert a patent.

This of course can be read two ways like what a shame because it's a sin to use cocaine and not a sin to legally assert your intellectual property rights, however in context, it's so much more sinister scenario of shaking down legitimate businesses for illegitimate reasons.