"How many binary blobs inside your computer?" is even more pressing. For the paranoid you could always buy a Purism[1] laptop with Trisquel[2] (pure libre Linux) running on it (if that's even possible, I'm not sure)
Ooh, watch out. If you have a talking tin foil hat, it was likely provided to you by a corporate entity. (This is a poor joke about sourcing tin foil hats)
Is the tin from a conflict-free source? How can you be sure without a blockchain to ensure provenance? (This is an even poorer joke)