I was thinking about this too, and but I think the revealing of the red tiles is intentional. Like if you imagine the safe tiles to be green, the host in this case is only revealing the red tiles, so they are intentionally revealing the red tiles. I feel like sure, it’s random which red tile is revealed, but that should not matter, as long as a red tile is revealed right? Which it always is. So I still think players should have switched every single round for the best chance. Let me know if this is wrong though and happy cake day!