All the other points about the unfairness makes sense, but the complaint about the poor random number generator does not make sense.

This isn't a multistep process that the "adversary" has access to. It doesn't matter how bad the random number generator is or even if it is predictable. Sure you could bribe the person putting it into excel I suppose, but you could do that anyway and just have them switch numbers around.

This is a silly complaint. Yes it is a bad random number generator, but predicability of the sequence isn't an attack surface in this use case.