I find it quite irritating that if I have to uncheck the box every time I post something otherwise I start receiving emails for that thread.
Is there a way to switch this function off?

I do not want this request to be lost.

Default should always be NO.
The user should ALWAYS have to select to opt in.
EU privacy rules require this, and it's important to get in line with global privacy regs for a global community.

Time to add updating TOS to the list, as MFN is in violation of EU privacy regs in this area - particularly in forums being an auto-subscribe.

Lawsuit waiting to happen as the grandfather clause has passed (2021).
Data matters.

~CSB