If the Packers win today, they are only 1 game ahead of Washington. Washington has the tiebreaker currently over Green Bay. I don't think the Packers want to be the 7th seed and go on the road to Philadelphia.
Washington is only one game behind the Packers and holds the tiebreaker over Green Bay. There is a difference between playing the Eagles on the road vs the NFC East or West leader.
I think it's because he doesn't throw the prettiest spiral. Peyton Manning didn't either. Goff launched that ball at around the 12 yard line and Williams caught it at the other 35, so that is 53 air yards.