(was going to be edit to earlier comment but you replied too fast :) ) I think I've been mentally expanding outwards from cryonics specifically to the we-can-live-forever brigade (I think some cryonics types are also part of this camp, but not necessarily all of them), who argue (roughly) that if medical sciences keeps extending lifespan, eventually we'll hit a point where you get one extra year of expected life per calendar year, and from that point on no one need die at all. That has obvious repercussions for the planet/world population as a whole.

Anyway! Slight tangent. The virtual thing doesn't (necessarily) hit that problem, although it may conceivably still hit a resources problem, depending on how much power you need to run a virtual-person & where we're at with computing & power technologies. (I have a vague recollection of reading that Moore's Law no longer applies; is that correct?). Quantum computing may be the way forward, but I know v little about that & about how resource-intensive it is.

You do still run into the physical environment (inc the human body environment) problem I mentioned above, though.