Most "variants of the human genotype" may well actually be endangered. More especially the less common ones. Most variants of what one might call "the human cultural genotype" are definitely endangered.

The point about traditions isn't whether they are sympathetic or not, it's being aware that they shape attitudes and actions, and that this needs to be taken into account, or they are likely come up behind you and clobber you when you aren't expecting it. The best way to deal with this may be to find ways of diverting and changing the tradition that has been associated with stuff you are trying to get rid of.

For example, just because songs come out of a foxhunting culture is no reason to for people who are against fox-hunting to avoid singing them. In fact I think there is a good case for singing them all the more.