A bright lad with a few years experience finds a way around the mitigations for a flaw found in the previous version. Bear in mind Apple is a $T1 organisation and he ... isn't.
Not only does he perform a rather well polished dance but he writes it up in an entertaining and well presented way. I suspect english is a second language too which makes the whole thing even more impressive.
Just to reiterate: he waltzes around a key aspect of the security in iOS 14 - that is disturbing to me. If he can do that, what do you think a well funded nation state bunch of noddies gets up to?
When I was his age, I had trouble finding my arse with both hands. He manages an attractive presentation of a pretty dry subject in a foreign language and presents it to an all star audience.