Regina, Saskatchewan; Canada
Did you read the paper? If you did, you missed the context:
What can government do about conspiracy theories? Among the things it can do,what should it do? We can readily imagine a series of possible responses. (1)Government might ban conspiracy theorizing. (2) Government might impose some kind of tax, financial or otherwise, on those who disseminate such theories. (3) Government might itself engage in counterspeech, marshaling arguments to discredit conspiracy theories. (4) Government might formally hire credible private parties to engage in counterspeech. (5) Government might engage in informal communication with such parties, encouraging them to help. Each instrument has a distinctive set of potential effects, or costs and benefits, and each will have a place under imaginable conditions. However, our main policy idea is that government should engage in cognitive infiltration of the groups that produce conspiracy theories, which involves a mix of (3), (4) and (5).
The banning and taxing are mentioned as possible responses that the government might choose, not the responses that the author is suggesting the government should choose. What it puts forth involves the third, fourth, and fifth responses mentioned, not the first and second (banning and taxing).