Consider an ordered set of two mes -- me one minute ago and me now. In which sense this set is a probability distribution? What does it mean?

In the sense that everything is - we have uncertainty over the physical configurations.

So are you arguing that future resurrections will be, basically, a brute-force approach?

No.

In the sense of "We can't be sure whether A or B happened, so we'll simulate both A and B branches"?

That's just how complex multi-modal inference works in general. The multiverse complexity comes in from realizing that it is the whole set of similar future worlds creating past simulations.