Not according to the MMA fighter who testified for the prosecution during the Chauvin trial.
UFC, Jon James also spoke about that hold.
MMA Fighter Testifies Derek Chauvin Used 'Blood Choke' On George Floyd
Seen it. Guy is lying, flat out. You can tell for several reasons. 1) "Kill choke" -- not a thing. In the submission martial arts it doesn't exist. It's just
not a thing. "Kill choke" is Hollywood style dramatizing. We don't distinguish between chokes and "kill chokes". 2) Knee on the shoulder and trapz is not a choke. It's a temporary pin while you transition. 3) "Shimmy hold". Again, not a thing. In 31 years of training I've never heard of it. Granted, that doesn't mean it's not out there -- some styles, and even schools within the same style, sometimes use different terminology to refer to the same thing. However, I searched shimmy hold, shimmy hold wrestling, shimmy jujitsu, shimmy mma, etc. The only thing I found relating to shimmies and chokes was articles about him using the term.
Yeah I see his racial tirade. It's a disgrace to the sport. The bodycam footage also shows he was shooting off his mouth without the whole picture. Literally. But then, racial hatred leads to that type of prejudice. You're talking about a guy who threw a tantrum and threatened to quit because they wouldn't pay him $30_000_000 for one fight. More recently he's askng $50_000_000 for a fight. Guy thinks he's God's gift to the world.
"Anyone who has practiced the very basics of jujitsu recognizes a bloodchoke when they see this. "
What a joke. Anyone who knows the basics of jujitsu knows you need to get both arteries on each side of the neck to get a decent choke. Not your knee mostly on his shoulder and a little on his trapz.
But anyway, the science is against him
New Study: More Evidence Against the Myth of “Restraint Asphyxia” | Force Science Institute
Also, I've been in that position. It sucks, but it's not going to put a sustained choke on you, much less kill you.