Except within five minutes I was able to find many of those same clips in other videos - eg by searching YouTube for "people fainting" - and most of them predated the pandemic by years. Clearly some troll had just found a bunch of old clips of people collapsing and edited it together into a lazy piece of anti-vaxx propaganda. And it works! People fall for it, even though this particular clip took about thirty seconds to debunk.
My point is - I've seen videos before of people jumping from buildings. They're not hard to find online; the now-defunct r/watchpeopledie was full of them, as was Liveleak (RIP). It would be trivially easy to find a bunch of these clips, edit them together and give them a caption that claims they all happened recently in one place and are part of a disturbing new trend.
So I'm not convinced that this video you shared is what it claims to be.
This person isn't my friend, and I consider him beyond help.