I assume you mean reports. Abusive chat reports have been tested by many people on twitch griefing streamers on purpose. It’s 20-30 unique reports within a short timespan. Silences are fully automated, once you hit that threshold your account gets silenced and you can’t play HL or TL.
Bans for non-participation are much harder to accomplish, Blizzard not only requires a large amount of reports over a long period of time, but they also only do those in weekly waves.
