Rhetorical, unanswerable questions and fauxrage aside, if you've been paying attention to these delivery threads, the dates bounce around inexplicably quite frequently. Perhaps you'll benefit from the EV incentives (assuming they pass) and be glad it moved out a bit in the end?
Also anecdotally, black seems to be more susceptible to these changes maybe? It's hard to completely follow individual posts here, and the tracker spreadsheet, while great, was not build to account for "drift" in dates as they change.