IMO a paper print-out of all passwords and backup codes is the most reliable backup. No bit-rot, no third party, and "degradation" is obvious - fire, flood, etc

IMO a paper print-out of all passwords and backup codes is the most reliable backup. No bit-rot, no third party, and "degradation" is obvious - fire, flood, etc. Theft is also usually obvious. If self-hosting, keep at a separate location than your hard drives.