How can individuals resist? Some metadata is trivial to hide, e.g. much email is encrypted between the user and server, but a record of an access will still exist. Would there be much benefit to creating fake traffic, say by sending dummy emails to yourself? What about fake browsing, or keeping TOR running 24/7 (not as an exit node, just a client)?
The goal is to make the data less useful and harder to tie to an individual or separate from fake data, and to increase the cost of collecting and storing such data. Don't worry, I'm already on the list of known dissidents anyway.