I don't understand the point that you are trying to make.
This is what it looks to me: "the problem with gravity is that since the objects fall down people rationalize everything (e.g. give explanations why they should fall down). If the objects went up year after year forever I guarantee people would shout up about it even though none of the underlying reasons for supporting it should have changed"
The point is not in comparing cryptocurrency with anything, but showing, that the the structure of your argument admits absurd consequences thus showing that the argument is invalid.
> the usefulness and popularity of crypto shouldn’t be related to its value in relation to fiat
Are you sure that the usefulness and popularity of crypto are related to its value beyond some reasonable correlation?
This is what it looks to me: "the problem with gravity is that since the objects fall down people rationalize everything (e.g. give explanations why they should fall down). If the objects went up year after year forever I guarantee people would shout up about it even though none of the underlying reasons for supporting it should have changed"