That's diferent, though. The hypothetical I was objecting to was humans having unbounded utility functions. I think that idea is a case of making things up.

FWIW, I stand by the idea that instrumental discounting means that debating ultimate discounting vs a lack of ultimate discounting mostly represents a storm in a teacup. In practice, all agents do instrumental discounting - since the future is uncertain and difficult to directly influence.

Any debate here should really be over whether ultimate discounting on a timescale of decades is desirable - or not.