Don't use CPUs from companies that have employees.

Don't use CPUs from companies.

Don't use anything

Don't be so paranoid. Just build your own CPU from discrete NAND gates like everyone else.

A pen and paper is everything you need.

But what if it’s some of that fancy paper or a pen that records everything you write! Might need to manufacture your own pen and paper now...

Hold up there you don't know if someone's been tampering with the trees, you'll have to grow your own forest first

The “trusting trust” flaw still applies, better sequence your own species of tree.

And trust the same chemical processes that eventually resulted in the mess we’re in? Start a new universe.

Don’t

Doesn't seem like that would leave many possibilities... ;)

I guess out of business CPU companies are one easily accessible category.

While true, it's pretty likely their IP was sold to still-in-business companies. ;)