I have no stake in any of this but some people have nosebleeds without anything nefarious or bad going on. This guy doesn’t need any help looking bad, suggesting that his nosebleed is important is stupid.
It's not the nosebleed in itself, it's the ignoration of the blood streaming down the face during a video interview that is the most curious. And it wouldn't be as relevant if the subject hadn't acted increasingly erratic and self-destructive at the same time period.
It's not "important", it's just deeply weird, because it tracks.
I sometimes get nosebleeds. There's no pain involved - it just feels like a slightly runny nose until either you wipe it or blood starts dripping into your frame of view. I get them a lot in low humidity.
I haven't watched the video, but if it's a small amount of blood it's perfectly possible he just didn't notice.