No - it's not possible to avoid. However, arbitrators aren't robots, if claims are being filed in a clearly malicious or frivolous manner you can expect a level headed mediator to provide a remedy.

In a case where one million people were legitimately harmed though, this can be absolutely disastrous for the company unless the wronged agree to waive the arbitration clause with the company and pursue something like a regular class action lawsuit. It'd still be more expensive than a regular class action lawsuit however.