Saw a few posts yesterday, so I watched the video, but basically dismissed it as it was loaded with loose correlations that really didn't hold water. Surprised to see how many people are talking about it today.
Snake venoms are generally toxic either to your nervous system or to your blood chemistry and coagulation pathways - they can have either effects of causing clotting or of causing bleeding and inhibiting clotting. There are hundreds of proteins/enzymes involved in both the venom and in the blood coagulation pathways. Many therapeutics are actually derived from components of venoms also.

It's very sloppy to insist that it is snake venom merely because of the coagulopathies. A really bad analogy would be like saying bombs are made in factories, and oh no! cars are made in factories too, so they're going to blow us all up!!!

The video really doesn't say anything more than that covid is much more a vascular disease than respiratory, which we already knew.