They don’t read the reports. It’s blatantly obvious each player has a report count and if that player report count reaches player report count maximum then a punishment is issued.
There are no measures to prevent false positives from happening with this busted report system. I’ve been posting about how the report system is busted for ages, but noone believes me and just assume I am a thrower or troll who deserves to be banned.
Blizzard bring out chat logs from literally months ago to try and justify silences on your account.