It's not foolproof, but that does require that you have released a sufficiently large sample of LaTeX source under your real name (or something that can be traced to your real name) for comparison. Additionally, if you really want to release something typeset like that, but you're worried about fingerprinting, my guess is that it's not that hard to deliberately change your personal style by using a minimal set of packages and when necessary restricting yourself to the most popular packages. Even if your new personal style still ends up unique, it wouldn't match the fingerprint of anything you've released under your own name.