Tesla disputes and class action suits vs forced arbitration

While numerous multi-customer disputes with most car makers can be litigated through class action lawsuits, Tesla's direct sales model allows it to include a contract clause that forces arbitration instead. And confidentiality can help keep a lot of disputes out of the news:

Seattle Times: Tesla’s direct sales model helps it thwart customer lawsuits
(also at: Tesla’s Direct Sales Model Helps It Thwart Customer Lawsuits - The New York Times)

Apparently there is a way out, for customers who notice soon enough:

"Tesla buyers can opt out of arbitration, and preserve their right to a trial, by sending a letter to the company within a month of buying a car. But few are aware of or exercise that option, plaintiff’s lawyers said."

Do many Tesla buyers in this forum, exercise this opt-out?