I don't get it often, but I do actually get the tingling sensation described with ASMR sometimes with whispering sounds and tapping sounds. I used to fall asleep to an ASMR playlist every night, but now I just use sleeping medications
Its very easy to see how someone not physically effected by it would think that its really weird, and like any other form of media, it has its very strange areas even for folks that do buy into the whole thing in a big way. And even for folks that do get it sometimes its only specific triggers, and everyone can have different triggers. Some ASMR that other people trigger hard on, I find repulsive, and vice versa. So it all adds up to make for a pretty confusing entry for a new person.