Overt or not, it was an attack on Terra Verde, and actions have consequences. I'd be really surprised if the writer didn't follow up on the international aftermath of that affair for Krakoa.
Beast was put in that position by the Quiet Council and we all know how the Council deals with the agents that become a liability to them, Sabertooth can attest to that...
We don't know for sure, but even if they've been purged, some of them will have died regardless, whether because they were attacked like the people in the presidential residence were, or because they had been turned into pollen like Quentin Quire has been.
That's still a lot of lives lost even if the purge worked the way you suggest.
The consequences can't be limited to Beast being punished, Terra Verde has been thrown under the bus by Krakoa, they should be compensated in full if they are to even mitigate this disaster a little.
Because they just made a nation of ennemies here, let alone the international community reacting badly to this imo.