It’s a good idea in theory, to give tools to players, many of whom believe they know what cheating looks like or consider themselves experienced but often aren’t, tools to deal with issues sounds efficient. But while letting players handle them and might sound like a faster fix, it’s not realistic or reliable. The system would be biased, privacy-invasive, and technically unworkable. Replays aren’t full recordings and if matches were recorded live to make them accurate, storing every match would demand massive data infrastructure far beyond what any studio would maintain. In the end it would create inconsistency, privacy risks and more drama not better moderation.
This kind of system has already been tried in multiple games before and it’s failed every time for the same reasons bias, abuse and unreliable data.