The flaw in Orchis’ plan?

So I have been wondering how they plan on playing nice to humanity but also dealing with peoples kids that are activating.

They have a big “win” now by getting them all thru portals, but how is the “We will kill 100 humans for the 3rd mutant back on Earth” gonna work?

I guess it could be a relatively empty threat that was aimed at Chuck, and served it purpose.