Like many reptile enthusiasts, I've had enough elapid venom in my body to kill many people (no, I am not in the slightest bit proud, I'm rather ashamed of it, but that's not relevant to this discussion). Going to hospital with that much elapid venom in you isn't a pleasant experience by any stretch of the imagination; I've experienced extreme pain and lost of the use of limbs for considerable periods of time. It's not fun to lose your sense of taste for a couple of weeks, etc etc, but like the majority of reptile enthusiasts who have been in that situation, I don't for a moment hold any ill will against any elapid. Most of us hope that the elapids which have put us in those situations are still out there living happy and undisturbed snakey lives, and as for bites involving captive snakes, I'm unaware of any cases in Australia where anyone was silly enough to blame the snake. Trees sometimes fall on people, killing them. Shall we rejoice at global deforestation?
I personally don't feel terribly comfortable with someone suggesting that it might be appropriate to kill an animal such as a snake because a dog's owner wasn't careful enough, or was unlucky, but this is probably one of the worst places of all to express your thoughts. If you're going to get upset and be unable to control an inappropriate outburst, please do your best to do it away from people who will be upset and offended by it, or worse still, agree with you and be encouraged to kill snakes (unfortunately, this ideology is contagious). This is an attitude many of us have fought hard to change and we don't need reptile people working against us.
It's incredible (literally) that you could claim not to have said anything offensive. Just look at the title you chose for this thread.