Edit: At least you’ll be in court, or part of class action, rather than stuck in their arbitration system!
For example they can use it to argue that sending an opt-out mails indicates that you have read the clause. It also indicates that you have read the TOS in general. It also indicates that you agreed to the rest of the TOS. Etc etc.
Edit 2: It doesn’t, it implies that you read this thread, or their announcement.