I don't think it's about just air purifiers. If their air purifier review is so obviously low quality, how do the other reviews fare? Do I need to read a debunking review of Wirecutter recommendations for every category I read? Why read Wirecutter at all then, if they're not trustworthy? Is it actually a review or an ad for the winner of the comparison?
I think a lot of our mainstream media is so bad because nobody is calling out the shoddy reporting.