Yeah I just watched my own video and was surprised to see exactly that. Because I remember reading somewhere else years ago that an ideal anti-satellite weapon would either de-orbit a satellite (like bumping it off orbit so it burns up) or use some kind of net/capture to push it off orbit, rather than blow it up.
Now this is going to have to be a rabbit hole for me (and some AI) this weekend.
Their test was in a low-ish orbit so most of the debris is gone now.
I haven't looked at stats lately but I'd guess the #1 source of debris in space right now is still the Chinese ASAT test which threw a bunch of crap into Medium Earth Orbit. Before that, the main source of debris was leaking coolant from some nuclear reactors the Soviet sent up
Now this is going to have to be a rabbit hole for me (and some AI) this weekend.