Seems they changed the policy without telling anyone.
Information about harassment bans
Players that use racial slurs, sexual slurs, hate speech, or other extremely toxic language in Rocket League will have a Game Ban placed on their account. Game bans start at 72 hours, move to one week for a second offense, and one month for a third offense or more.
Players that use less offensive toxic language, like curse words, will have Chat Bans and/or Game Bans placed on their account. Chat Bans allow you to play Rocket League online, but you cannot use chat during a match. Quick Chat still works but is limited. Chat Bans start at 24 hours, can increase to 72 hours, then increase up to one month. Chat Bans can escalate to Game Bans for this kind of harassment.