The main issue with evaluating content for what it is is how extremely asymmetric that process has become.
Slop looks reasonable on the surface, and requires orders of magnitude more effort to evaluate than to produce. It’s produced once, but the process has to be repeated for every single reader.
Disregarding content that smells like AI becomes an extremely tempting early filtering mechanism to separate signal from noise - the reader’s time is valuable.
Keep the private key you actively use in the secure enclave. The system you actively use is most at risk.
Keep a secondary offline private key as backup. You can generate and store it in a secure location, and never move it around. Airgapped even if you want. You could even use a yubikey or other hardware for the secondary key giving you two hard to export keys.
Good old eat like a bird, poop like an elephant.