It doesn't seem obviously true that that's the question? Random tweets are just random tweets, a not insignificant number of people know that they should be reg

It doesn't seem obviously true that that's the question? Random tweets are just random tweets, a not insignificant number of people know that they should be regarded sceptically. Community notes are seemingly authoritative, definitive, purport to present an accepted consensus. If 50% of random tweets were wrong and a mere 49% of community notes were wrong, then your heuristic would decide they're helpful but to me it would seem strongly arguable that the more convincing nature of the wrong ones would far outweigh such a minor improvement in accuracy.