What “type of takedown”? The headlock?
I would want that coroner investigated.
With an arm wrapped around him from behind, that seems unnecessary to me. I would hope for smarter approaches. Talk to him until he’s convinced or bored and gets in the car. Tasers. Pepper spray. The guy wasn’t menacing anyone, so it seems reasonable to use low contact / violence methods of arrest.
Once, there was a crazy guy in Seattle wielding a sword. The cops got him cornered. They couldn’t figure out how to take him down for a few hours. So, they surrounded him, and waited until someone came up with a good idea. Eventually, they called the fire department and hosed him down until he dropped the sword and they sprayed it away from him.
I see that video and it seems like they went with plan A: Attack. Seems unnecessary.