One aspect of the issue is that a lot of folks stocked up a lifetime of supplies because of the FDA deeming. In many cases investing a lot of money in it. I can understand them not wanting to "obsolete" their stash.
Oh I understand that, but still, it's more about "not for me", "too complicated" or the other reasons usually given that I find that they kinda lose out on something that they might enjoy quite a lot. Like I've said a few times already, people are set in their ways.