I'm imagining government officials in Fiji watching this and just going, what the heck - they're just dumping their old challenges into our oceans now?!
Kyle really should have toned down his personal story. Between that and challenge strength no one wanted him anywhere near the finale. Kenzie was smart in that she highlighted her charitable side at final tribal council but didn't bring it up in a way prior that would have raised her threat level.
It wouldn't have necessarily made a difference but it's a flaw in his game.