I'm not sure what the You Tube video says but there is no Dr. Richard Collins currently in the faculty at the University of Cambridge. Nor can I find any reference to a physicist by that name using Google. I did find an Associate Professor of Electrical Engineering employed at the University of Alaska, a Dentist and a Naturist, but they doesn't seem to be the Dr. Collins you mentioned.

I suggest that the You Tube video is a hoax. If it is suggesting that the fine tuning of gravity is miraculous, then I'd be pretty confident it is.

As for your Quranic quotes, even without getting into the vagaries of translation, I don't read the verse that way at all. And as for God
destroying the Universe if he appeared in it, that would seem to be limiting what he can do. Surely a God that wanted his existence to be
proved could come up with a convincing demonstration that didn't involve destroying everything.