I have no inside knowledge but that is how I would presume it would be. The account needs to be locked and the easiest way to do that is to lose the keys.
That is what Null accounts do.
As for the automation, I do not see someone manually doing the swaps every time enters so that will have a bot that does it.
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Yeah, must be a bot handling those transactions. Since they are allowing anyone and everyone to participate. It doesn't make much sense to do it manually.
Once we see things unfold and developments start to happen, maybe then we will get a clear idea of this.
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