Mon bon ami, have you forgotten this device?
Dunno, maybe it only detects external particles and you need x-ray machines for internal ones?
I'm just guessing but assuming this is the creators making a direct commentary then I would say X-Rays are for seeing what's inside a person, not just skin deep or by appearances. Liberals and fascists act very similarly at the end of the day so it may be the they're just saying that liberals have a different idea on "the inside" vs fascists. This tracks with my understanding of them, which is that liberals think of themselves as good people in favor of "progressive" values (but not acting on them too quickly!) fighting the good fight for liberation and equality (in some incoherent form, e.g. liberals are usually still pretty racist). Fascists tend to be pretty in touch with their hatred of the marginalized and celebrate violence against them. They still think of themselves as good people but have no illusions about "progress", they are reactionaries that openly want to roll back the clock on various "issues".
But I may be reading too much into it. It may also be that the creators are just making fun of this person, as these characters are depicted in a way to make some criticisms of academic communists. Maybe they're just letting them say something that's both valid in many ways and stupid in some others to suggest their thoughts are unclear.
If I had to use a metaphor involving x-ray machines, I would have said the opposite. That outwardly libs and fascists seem different but if you took an x-ray they would look similar.
Yeah that would also work.
I honestly think they are distinct, just playing for the same team. Playing different positions in defense of the capitalist order. Of course to do this they must collaborate and justify each other in some way, materially if not rhetorically.
To know the difference you just need to look at the role they're playing.
