Yes he probably did die from drugs in his system. But he also died from lack of oxygen with a knee on the neck.
I watched the full video and that COP never released his knee off his neck even after he was dead. He stuck his hands in his pockets with that smirk. I saw on video where George died and it was full five-8 min before another sheriff deputy came and checked his pulse in his neck. Still the cop kept his knee on his neck. He was a jerk.
I am definitely not siding with the police officers who arrested George Floyd and contributed to his death. That said, the one officer does not actually have his hands in his pockets. He is wearing black gloves and on his dark pants if merely appears that his hand is in his pocket. But if you look at other pictures you’ll see the black gloves. It’s just an optical illusion.