On the contrary, it's only natural that impermanent beings would be attached to impermanent things and ideas. I think the most mentally healthy people I know don't consider eternity or the impermanence of everything very often.

This sounds like dogma to me. I haven't heard a concrete reason that death being inevitable implies we should accept it.

There are plenty of reasons why we shouldn't. It's not in the nature of a living being to accept death because living beings are driven by survival and reproduction and death is the opposite of that. From the moment we come into this world, our bodies scream at us to avoid death. It makes surrounding people unhappy. It means the destruction of memories, personalities, and abilities in the dying person. How does accepting it benefit us? How does it grant wisdom?

Everyone who isn't a child knows we're going to die, and we shouldn't try to hide that fact because that would be lying - but the pervading culture that we should make peace with death or pretend we think it's a good thing in an abstract way seems like it can only do harm.

Why? As living animals it's our prime directive to stay alive even if it's eventually a losing battle. What kind of enlightenment do you think we'll achieve by going against our nature? I suspect all we get out of it is the possibility of suicidal ideation.

Hold on, saying housing should be the number one wealth builder for families is exactly the problem. Prices increasing faster than inflation means housing gets more and more unaffordable indefinitely. It's not sustainable, something is going to break somewhere.