I don't know how much automatically opting everyone in to automatic photo tagging made Meta, but I assume its "less than 100% of their revenue".
Barring the point of contention being integral to the business's revenue model or management of the company being infected with oppositional defiant disorder a lawsuit is just an opportunity for some middle manager + team to get praised for making a revenue-negative change that reduces the risk of future fines.
Work like that is a gold mind; several people will probably get promoted for it.
Sounds like ignoring it worked fine for them then.