Re: "the inbreeding problem can be easily countered"
Ah but you've already introduced a rather critical strawman of your own that stored sperm would be allocated to an unwilling woman according to some "selective breeding" program which itself could come under the eugenics heading.
Allocation should be random, I'd even suggest a mixture from multiple donors, (may the most motile win) and if the recipient has a permanent partner and they both agree they cold stir some of his in there too. There's a nasty can of worms about donor ethnicity matching with the mother or mothers partner but I have no intention of being dragged down that avenue.
Obviously any alterations to the normal way of doing things must be under the fully informed consent of the women however it's not beyond imagining that such consent would be essential for any prospective colonists. Not all their kids, some could be made the old fashioned way but it really depends on the size of the colony, the smaller it is the more important it is to get external gene lines into the mix.
Artificial insemination by donor is something that has been going on for ages in cases of male infertility with no problems, it's NOT selective breeding, it's a way for a woman to have children without needing a handy fertile man. So if a colony does not have sufficient fertile men for genetic diversity then a simple and safe non-surgical procedure seems a perfect fit.