I'm not a physicist but after watching this I'm utterly unconvinced. Inconceivably large number of possible Universes cited as evidence because our own might w

I'm not a physicist but after watching this I'm utterly unconvinced. Inconceivably large number of possible Universes cited as evidence because our own might well be in there somewhere ? A casual passing mention that there are not 4 but 10 dimensions, and the fact that we can't see them is not proof that the theory is wrong but simply dismissed because they might be very well hidden. To the casual observer that I am it looks like formula-tweaking to fit some mathematical framework better, but with no regard with compatibility with reality.