I agree that it is a very stupid development. But I think its because the binding technically seals movement to? Even if it doesn't look like it.Kinda stupid development. If she can’t technically harm komari then why doesn’t komari just shield the other goddess with her body.
She’s likely not going to take the risk if that happens.
But yeah having komari take the reincarnator was very clearly a trap that she just willing walked into. IMO she just lied to your face, and now your gonna trust she follows through with a threat? She has no reason to not still kill the goddess anyways. which by that point puts her back to square one. And lets be honest, after just spilling her entire weak ass reasoning for this, if killing dieties would have solved the problem she would have already done so.
This on top of the MC deciding to have a 8 curse picnic while his friends and lover got kindapped in front of his own eyes just makes it feel like its being forced to have a conflict between MC and Komari.