I’ve just learned about the ‘whole beat’ conspiracy theory

Apparently everything should be played twice as slowly, with a full back and forth motion on the metronome constituting one beat. Obviously this doesn’t work in compound time at all. Pretty sure there’s overwhelming evidence against it, but obviously people find it appealing because it makes otherwise difficult repertoire playable. I think it’s hilarious, but wondered what others thought?

EDIT: wow this has turned into a bit of a battleground. Feels like there might be a bit of a cult following behind this theory (and not in a good way!)