I think part of the problem here comes when you consider an infinite number of people. Lets say that anything involving too many bits of memory is not a person. Yes, this implies we don’t care about 3^^^^3 sized minds, but we can care about more reasonably sized subsections of those minds. So we have some finite list of computations we consider people. So what you care about is the amount of magic reality fluid that gets applied to each computation. (The total amount of magic reality fluid must add up to 1)
In this view, there is no difference between a single person in cyclic space and an infinite row of identical people. They are both just one computation.
I think part of the problem here comes when you consider an infinite number of people. Lets say that anything involving too many bits of memory is not a person. Yes, this implies we don’t care about 3^^^^3 sized minds, but we can care about more reasonably sized subsections of those minds. So we have some finite list of computations we consider people. So what you care about is the amount of magic reality fluid that gets applied to each computation. (The total amount of magic reality fluid must add up to 1)
In this view, there is no difference between a single person in cyclic space and an infinite row of identical people. They are both just one computation.