How do you reasonably do this? You would have to spend an incredible amount of effort creating fake data everywhere, without having any clue if what you're doing is even working. With new AI tools and technologies it's likely that someone with enough resources and motivation would be able to filter out the signal from the noise anyway.
I currently lean towards just minimizing my digital footprint, and carefully choosing the hardware and software I use. It still takes a lot of effort and sacrifice, and I don't expect this method to be foolproof, but at least it's reasonably manageable. At some point you do have to accept that absolute privacy is impossible in the modern world, even if you shun all technology.