I think it's important to understand that consent was indeed given, and most users likely understood that they did not own any non-copyrightable portion of their user-generated content.
Rather, the conversation should focus on how to improve parsing of ToS (I personally believe we should use symbolic labeling like we do with food), as well as regulation around what terms can change for content which was generated under the premise of an older ToS.
OP's statement, "It's immediately and self-evidently obvious that no end-user in 2007 consented to photos of their 2007 era teenage self being used to train an AI how to identify an emo kid," is simply false. Many, if not most users, understood that they gave permission for their UGC to be used to improve the services. This is what I am rebuking.
