Except there is no ethnic genocide here. Like, at all. You're just broadly trying to stretch the argument to absurd generalities of complete isolationism versus intervention, as if actual legitimate US (or anyone's for that matter including Russian) imperialism and typical bullshit military adventures and CIA antics are somehow the same thing as the international community failing to prevent a genocide. Like I said, it is usually the US behind those sorts of things anyway in SAhttps://en.wikipedia.org/wiki/El_Mozote_massacre
I should also point out that the "School of the Americas" is one of if not the most notorious institutes in the US and is literally a school for training terrorists and death squads. Among the many other notable graduates of that program are Los Zetas (who, the story goes, went rogue, though one wonders if they still have US intelligence contacts).
The reason why Abrams is under scrutiny is because of his involvement in that particular massacre, as well as numerous other human rights abuses throughout south America, as well as being one of the architects for the Iraq war, which ad you might recall resulted in civil war, genocide, continued instability throughout the region, and eventually ISIS.
If this was a genuine humanitarian operation of course we would be for it but I don't know why you expect me to believe you it's raining when my leg is being pissed on any more than all of us knew the Russians were lying through their teeth about Ukraine.