Well, burials only matter if others care about it. Other values, such as "do not harm others", etc., matter even if others don't care about them, because they concern actual suffering of living people.
If you follow Parfit, you choose that the latter kind is the only kind to care about, and so caring about burials for the sake of the one buried would be nonsensical to you.
If you follow Parfit, you choose that the latter kind is the only kind to care about, and so caring about burials for the sake of the one buried would be nonsensical to you.