If Trump voids autopen, could everyone start legally disputing their signed contracts, loans, and taxes?

If Trump were to successfully void autopen signatures for past presidents, would that set a legal precedent allowing everyone government officials, businesses, and even ordinary citizens to dispute documents they’ve signed using an autopen or similar method?

Think about all the areas where autopen or automated signatures are used: contracts, mortgages, tax filings, corporate agreements, medical consent forms, even student loans. If a president can argue that autopen signatures aren’t valid, couldn’t a good lawyer use that same precedent to help someone get out of a bad contract, challenge a tax return, or dispute a legally binding agreement?

Would this open the floodgates for legal chaos, or is there a limit to how far such a precedent could reach? Curious to hear thoughts from legal experts how strong of an argument could this actually be in court?