"assisted dying, wherein advance directives aren't permitted in cases where people may be in a coma or suffering from dementia."
Which of course is the very case where you want to be able to give advance directives - or at least I certainly would.
And I agree about restricting the rights of everyone - in order to "get" a tiny number of miscreants they have criminalized a perfectly innocent, healthy activity engaged in by many, perhaps millions, of couples.