In vitro fertilisation involves similar cold, used to preserve actual embryos intended to grow up into real life humans. As does freezing sperm. No-one bats an eyelid; I'd suggest because these technologies work pretty well.

There are many complicated ethical questions surrounding both the freezing of sperm and the freezing of embryos, but these questions arise because the technologies do in fact work pretty well, therefore have to be taken seriously.

This suggests "cold is evil" is not a factor.