My point is that some processes you encounter will tend to show the Lindy effect, and some won't. If you want to claim that the Lindy effect should be the defau

My point is that some processes you encounter will tend to show the Lindy effect, and some won't. If you want to claim that the Lindy effect should be the default assumption, it is up to you to show that it's more likely than not that a random process you encounter shows the Lindy effect. This is not at all an obvious fact, and is quite likely not even true. So, if most processes are in fact like human lifespans, which do not show a Lindy effect, then it is completely wrong to assume that a random process that you encounter will have this property.