As soon as the man makes it clear he's going to engage instead of moving toward the shore, a mutter of exasperation that sounds very much like 'something something stubborn, Astral-damned something something' comes from Ignis' direction even as he takes out another shark's fin. The ice groans and creaks unhappily under their weight and the movements.

"Go toward the shore! The ice isn't strong enough for prolonged fighting and they will just keep coming!" This has nothing to do with bravery or proving a point. It's about survival.