The Lindy Effect is meant to describe things like buildings and cities, that generally you don't have an outside risk to consider that the whole time they might've been a fraud or illegal.

We don't really need to worry that The Great Pyramids have been a hologram all this time. We don't need to worry that the US is going to make The Great Pyramids illegal (I mean, anything can happen, but it's a much smaller chance than w/ Crypto).