You're not advocating for it because murdering people is highly immoral and illegal. That answers your question for the most part.
You also have to remember that the magnitude and speed of this stuff is very new to pretty much everybody. It's not exactly trivial to go from "I'm just doing my job" to "I need to kill everybody in my company to save the world" in a year or two, especially if a very, very large part of society doesn't even see the justification for it.
I'm convinced that most people here (even though we have more knowledge closer to the edge of AI development) would show only disdain for an Anthropic employee that murdered everybody there because they believed strongly in the dangers of AI.