I can bet this is the LAST thing they want to see in the headlines. It forces them to address it, maybe they have a plan ready to go for this eventuality, a whole PR push and I kind of hope they do. If they don't they either look weak on privacy or have to roll out some half-baked plan/proposal/nebulous idea on how to protect users privacy better in iOS 13 or something like that.
Right now Apple is doing a whole hell of a lot of taking out of both sides of it's mouth and I understand it's a hard line to walk, I'm not saying I could do it better. FB's practices in general are probably an affront to Apple in general but skirting Apple's limitations to piss all over privacy and essentially turn an iPhone into an Android-level of data collection, I can imagine Apple is PISSED. I just really hope they had something planned for this day.