That seems really, really dumb. Especially since it's not even like it's some ancient sacred mystical cloud, since it's a recent development, right? (I mean it being in cloud form, not the terrigen as a general thing, of course).
Like, hell, even without thinking too deeply on it, I don't see why both sides couldn't be satisfied with, say: Use Magneto to create large metal container, pull around cloud (or part of the cloud if it's too big for that, and if so then repeat), seal air tight, compress as needed. Storm could help "herd" it with wind control for extra ease. And then the cloud is safely contained and they can funnel it back into their mystical caverns or whatever they want (I'm not well read on Inhumans to be fair, and I also haven't read any of the stuff that sets all this stuff off in particular). And that's just using two people's powers, who are already clearly invested in the matter, much less doing something like, say, bringing in the Richards/Pym/Stark types who could whip up something even more direct and easy to use.
As is the mutants are far and away in the right, but it still seems stupid that this is somehow considered a problem that can only be solved with "let all the mutants die" or "blow up the cloud", with no other possible ways to deal with it. Also, I really, really hope they avoid having Kamala actually fully support the Inhuman side on this, even though I know that they will. She's obviously going to end up involved, but I'm hoping she'll get off with a "why are you jerks attacking my dog?!" type snap judgment fight or something like that, rather than saddling her with being on the super crappy side of this thing full force.
. Heartbreaking. I felt legitimately sick after that.