Did you watch the video yourself and think through it?
The video doesn't disprove the argument against infinite regress. It makes the point of the argument even though the narrator is trying to argue against the Kalam.
We typically split infinity into two types:
Actual infinity
Potential infinity
But this distinction is problematic. A potential infinity is just a ridiculously large chain, not an infinite one. In fact, you may say it is in perpetual finitude. How? Imagine you wanted to create an infinite stack of dollar bills. You pick one bill and then add another and so on till say the one billionth. There are two things happening:
1. There is a state change (an increase in the number of dollar bills is a state change for the stack)
2. You have a stack that stays extensible (i.e you can always add to it to induce a state change)
These are characteristics of finite conditions (i.e. they change and are open to change). Infinity has no boundary or terminal point; it is fully actualized. Once there is a starting point, it is an indicator of finitude. If the universe is an infinite set of equally infinite events, then all events would have been actualized at no decipherable time (since time is a measure of change and infinity allows for no change).
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