Originally posted by KingD19
You're not wrong at all, but because the script was what it was, that seems the reason why. They wrote the plot around Ikaris being a loyal Eternal to the end, making him a threat to the others who wanted to help humanity. But he also had to be weak enough that they could fight back, and the Deviants were a legitimate danger to him. So yeah, with a sucky plot Ikaris was the lynchpin so they moved him where they needed to make it work.
It didn't look like the rest except Gilgamesh were any threat to Ikaris. He barehanded Thena's blades, was completely unharmed by Makkari's attacks and Kingo's blasts, and Phastos draining his energy kept him down only for so long.