I think he just wants to say that people still see the difference between a one-tooth-fairy and a two-tooth-fairy where the latter lies closer to false on the s

I think he just wants to say that people still see the difference between a one-tooth-fairy and a two-tooth-fairy where the latter lies closer to false on the spectrum of "falsity" So, yes both fairies still fit in the bucket but now it's you who put them there and not them :P