Ah, bad news, you cc'd legal@, which technically isn't directly emailing legal@. We have denied your claim and you will be shot from a rocket directly into the sun next Wednesday.
“I opt out of the updated terms and will stick to the current in place ones indefinitely, including any future changes. I declare myself immune from having to do anything like this again in the future and set my status to auto-opt-out.”
Is this legally binding? I'm extremely skeptical any time phrases like "immune" and "automatically" start making their way into legalese as it's usually something like those Facebook "don't use my photos" things your aunt reposts every few months.
They have lawyers on staff, it doesn't matter if it is legally binding because they will ignore it and force you to spend thousands of dollars trying to enforce it (in the unlikely case it mattered).