I'm on the side this guy had absolutely no right to kill this snake.
And comparing it to an ant or a mosquito is actually kind of childish... Now I could see if this snake was attached to my arm biting me then yeah kill it but randomly no. If I'm in my backyard and I see an ant hill o don't run over and destroy it... Same as I would never deliberatly go out of my way to kill a mosquito.
Man I wish I was so brave to chop off a venomous snakes head... Pfft yeah right. Comon who is this joker?
But seriously I live in Canada and here we have bears. If anyone ever saw a bear heading across the street near a neighbours house, pinned it down and chopped off it's head that person would be in jail.
I think it's absolutely ridiculous that people will move to an area that has venomous snakes and think it's ok to kill every one that "goes near my house". If you don't like it, MOVE.
Unfortunely the snakes wholive there don't have this option. I'm sure if you did as was suggested and put a bucket over it and called someone it would be VERY easy to find someone with 1/4 of a heart to relocate this animal for you.
Well I'm off to backyard. I think I just saw an angry raccoon looking at my neighbours house (they have a chihuaha). Don't worry though guys I'm tough. I'll just pin it down and hack it's head off.

Grrrr, Jeremy.

P.s. I'm also the guy who will catch the spider in my house and let it go outside rather then squish it in some toilet paper.