You raise some good points and this is interesting.
Let me expand on your scenario. You state you are going to swim the channel.
You start, you get stung, bitten or what ever, but decide to continue, not swimming but in a canoe.
You have a tracker so everyone can see where you are and anyone can join you but you made it clear you are not swimming now but canoeing. Possible?
Would you continue across the channel knowing that at any time if you got into a chase boat you could be called out?
As for the claims he was not injured if any of you took the time and trouble to reach out to his PR guy you would get the facts. He in fact was injured sorry to burst that bubble.