They probably just don’t need them anymore. Obviously they are confident that their AI workers are doing a good enough job, and my feeling is that they aren’t planning on creating any groundbreaking new software anytime soon that requires the same number of human engineers to do the work. I think it’s potentially a canary in the coal mine type of warning for the rest of the industry. If a company like Meta doesn’t think it needs the headcount, then other big companies will likely soon follow.