The button that allows you to report players in Rainbow Six Siege has often been somewhat of a mystery to players, as the inner workings of what it does and how Ubisoft respond have always been under wraps. Macie Jay, a popular YouTuber, has tweeted that he's seen a notification that says players can be banned for toxic behaviour, and Its_Epi, a community developer for Ubisoft, has confirmed that Ubisoft are testing a new system that targets toxic players, banning them for specific language.
Don't get angry because of your team, just find a new operator to carry with.
Real name Craig Robertson, Its_Epi added this to a reddit thread about Macie Jay's tweet. The full comments reads "We are in the process of testing a new method of banning players that are acting in a wholly inappropriate manner.