Ads are still bread and butter for Meta. The first to go will be the folks who are in vogue bcoz of cultural reasons, eg. diversity, green, etc. I would even go the extent of saying that a lot of open source maintainers will also be axed, the day Meta stops making ad money and fights for survival. The issue of `attribution` is to be decided at last, when anyway the house is partially burned and the company is fighting for survival. I am talking about the initial phase, where a lot of engineers work on teams that make no monetary/value sense for company and are there, bcoz manager/CEO don't care or are kind(mostly former).