Not caring about being backwards compatible is perfectly fine choice. Not caring about having reliable guides for updating between versions (which include keep

Not caring about being backwards compatible is perfectly fine choice. Not caring about having reliable guides for updating between versions (which include keeping information around for upgrade between outdated versions. These needed be updated, but they should still be possible to find for people that use old versions) is less ok. The situation tend to be decent if one upgrades between current versions, but that information needs to be kept, which isn't the case today. It is fine not to update them, but they still must be possible to find.