The mods have an incredibly-large workload just with ATC reports. Adding the need to watch replays of every pilot report would exponentially increase that workload.
Consider that even the majority of IFATC can’t report as pilots for this reason.
Also, many times when I’m watching a field that’s busy without ATC, pilots who end up being ghosted are often in situations where they would probably ghost the pilot with whom they were interfering, thinking they were in the right, when in fact it was the other way around.
Just as an example, any time the colors switch for a moment, problems arise. At Sydney yesterday, 34s had been in use for hours and there was still active approach vectoring to 34s, just no tower. Even after 100 traffic advisories, one pilot tried to take off from 16R at the same time a pilot was taking off from 34L.
Now, there, that pilot on 16R is going to probably report the other for being in his way, though he was clearly the one going against the flow of traffic. It’s just way too much work, and these would add up to the mods doing nothing but reviewing pilot reports.
Two planes approach each other at Cruise at the same altitude. One has to be at the wrong flight level for his direction of travel, but clearly he doesn’t know this or he’d be at a proper one. Does he get to report?
Sequencing reports would be overwhelming. We see it all the time the second tower closes. A guy fourth in line suddenly divebombs a short base turn and cuts someone off. When he lands, does he report the person right behind him he just cut off for lacking separation?
The situations are just too numerous, and the overall idea requires perfect understanding of the rules on the part of every pilot, and we are certainly light years away from achieving that. (Yes, I know LY is a measure of distance…eons away? Or if you’re George Lucas…Parsecs away?)