They answer his decision to not back down either by taking another scoop of ice cream in their hand as well. They should learn to use a spoon, the wait staff thinks, but they're quite content eating like this. It takes them a moment to answer his next question because they're eating, but when they speak they sound questioning and curious again.

"Eqg eqh ci aqhxalilz qu stay, uzhfi' fi fi aqhrailz."
"Why would they choose to stay, that's a bad choice."

Like they'd told Luka before: He should just leave if he wanted to.