I think there has been a misunderstanding ... I fully expect the CT type scanners used on checked-in baggage to damage film, and would not question that fact.
It was my understanding that Austerby, the originator of this topic, was intending to debunk this internet myth that film, even fast film, can be damaged in hand luggage x-ray machines ... while it is difficult to prove a negative, both he and I have never experienced it, and I have never seen a convincing example despite asking each time it crops up ... personally I think it's just internet noise, with a tad of trolling thrown in.
I try to challenge the x-ray myth each time it comes up, if someone doesn't anyone new to the medium will be mislead, confused and possibly discouraged from travelling with film.