Two scholars who study death rituals explain that the corpse is considered spiritually polluting in many religious traditions, while the Moon holds a sacred place.
How is this not a parallel to climate catastrophe?
I hear you arguing:
If you don't want to pollute the planet, go ahead.
If other people want to pollute the planet, your beliefs are entirely irrelevant.
The moon is a shared resource, and blasting off rockets with remains into an ecology that can't process it, and diminishes ours, seems like a poor way to respect neither our own nor the Moon's resource cycles.
Don't get me wrong here: there's certainly reasons this idea is stupid as hell. Wasteful, expensive, polluting, creating future cleanup should we colonize the moon...
I'm just pointing out that using religion as your reason that others should be upset about this is also foolish. Let religion guide your own decisions.