So this is a weird number, as I said before, because the number is not 5000. However, I realized afterwards that I had 9 other reports made from other topics. Now I counted them again and the total number of displayed reports is 5000 indeed. However, I saw in that topic of yours that theymos did not make any official statement about that... it was a silent move to say so 
Maybe he'll come back with an explanation... or maybe he is working something on reports area.
Maybe he'll come back with an explanation... or maybe he is working something on reports area.He explained this to me in PM correspondence, but did not do it in a public thread. I did not copy his explanation from the PM, but decided to look into it myself and ask other reporters about this update.