Gscholz and I had another thread going a couple years ago regarding Hinds surviving manpads hits - the ratio if very much in the Hinds favor so far as videos out there, there are only 1 or 2 out there of them going down from manpads, while there are many, many of them surviving.
Manpads are very deadly, and simple - the crew in the OP video remembered to count down the seeker cooling, but completely forgot to super elevate the tube just prior to hitting the launch trigger. It didn't matter, it still worked, even with a major mistake in the firing cycle. That says quite a bit on its own.
These things are just going to get more lethal - as I said, this particular weapon is 30+ years old most likely. Newer seekers, rocket motors (low to no smoke and much faster acceleration), and especially better warheads - nothing that flies is truly safe. Of course, countermeasure systems have come a long way, vs both radar and IR sams, and AAA detection systems too.