Of course inflation is natural. Unless we are all gonna share the same $100 forever it has to happen at least without some sort of perfect foresight so the correct amount of money can be issued.
What isn’t natural is somehow people are convinced they should be held hostage by business.
When somehow we are convinced taking out a loan that you have to pay on for eternity (selling stock) that is not natural.
When somehow limited resources (our time) has less value then an unlimited resource (money) that is not natural.