Actually, if only two or three states do this (as long as they are the right states) he is cold meat.
Pennsylvania, Michigan, Nevada all seem doable. Arizona and North Carolina might be a stretch. Wisconsin and Georgia, probably not. The Michigan case has been rejected, pending appeal. I suspect that if the Supreme Court green lights this (not guaranteed, but not guaranteed not to happen either) the appeal will be successful.
Also, its not anti-democratic to bar the jerk that tried to overthrow our democracy from running for office again. That's just common sense. And its in the constitution.
Arnold Schwarzenegger can't be president. That's because he was born in Austria as an Austrian citizen. It isn't anti-democratic that he can't be president, its the rules.
Billie Eilish can't be president. That's because she is 22. It isn't anti-democratic that she can't be president, its the rules.
A pig can't be president. That's because it is a pig. It isn't anti-democratic that a pig can't be president, its the rules.