I don't think that's entirely accurate. The problem is that the content they were looking for 200, 100, and even 20 years ago used to be physical. Now it's digital.
Previously when they searched your home, they'd be looking for physical evidence -- mail, letters, receipts, paraphernalia, what have you. Today, a lot of that information has moved to electronic devices, taking what was once safeguarded by your front door, and putting it behind a new electronic lock.
I'm not commenting specifically on what powers should or shouldn't be available to law enforcement, but I think it's pretty clear that the situation has changed from 200 years ago, and we should be making decisions in the current context.