I get it, Shadowrunners do evil things. But they're rarely so casual about it, and most of them have limits.
Citation needed. I'm sure if you asked the right people you'd get a response that Shadowrunners are universally evil, immoral and smelly too.
Besides which I don't think Butch is at all casual about this. It was a fully thought through process after gathering information and SEEING what CFD did to people, from executives, to small children, to close friends. The fact that she lays it out matter of factly reflects how determined she is at this point. I don't think there was any part of this undertaken casually.
And in any case, what makes other shadowrunners more excusable? Or Butch less excusable? After all to paraphrase Sam Vimes: "Accepting a bribe to let a petty criminal go, or accepting a bribe to let a murderer walk are the same. Everything else is just haggling about the price."
As for those of who think anything like this is done in real life (in western civilized countries, anyway) or somehow think it would be ok if it was.......something is wrong with you.
That's an awfully small scope you're limiting things to there, and it kind of misses the point. This isn't real life western civilized countries. This is alternate future western quasi-civilized countries that are afflicted with an all-but-incurable pandemic threatening life looming on the horizon. This isn't Mengele's purely academic interests in twins, heterochromia or dwarfism inspired by the opportunity of having a captive population to draw from. This is desperation fueled by an absolute need for knowledge in order to find a cure in time.
Don't forget, this is Shadowrun in the 2070s. Some 60 years ago, in the timeline, VITAS I wiped out a quarter of the entire world's population. Mexico City and Calcutta were both
Burned to the Ground in order to attempt to prevent spread. Africa alone suffered some 800 Million casualties.
10 years later Vitas II stripped another 900 million (10% of the world's population) despite having cures on hand. As a Doctor in the 2070s, Butch has these statistics hanging over her head. If the deaths of 20, 30, 50 people could save potentially up to 900 MILLION? 50 doesn't sound so bad anymore. Is she wrong? Is she right? Is she evil?
If she succeeds, will it matter? Or for that matter... if she fails?
"When one man dies, it's a tragedy. When thousands die, it's statistics."