Right?! And the problem with that assertion is that Beast says we need a bastard in this, which implies a necessity.
Problem is that Beast has had to have his butt pulled out of terrible situations he has caused throughout the entirety of this series. Not one single win Beast has had made any sort of positive impact on that of Krakoa.
You want proper bastards, look at Magneto, Emma Frost, or more accurately, Charles Xavier. All have made morally dubious decisions that have terrible moral implications. Hell, some even blew up in their faces further down the line as a sort of karmic retribution. Yet, we still saw the reasoning and the resulting success from those decisions that validated their behavior.
Xavier mind-wipes Cyclops, Scott went on to lead the Second Gen X-Men and save the O4 without the guilt of the secret teams downfall. The ramifications in which kept up the X-Men in good and created Vulcan in bad.
That is how you do a proper complex decision. What Beast does is just being a jack***.