I hate the "more people will miss their flights if there is no airport tunnel" line.
Giving yourself enough time to get to the airport, check in, and go through security is YOUR responsibility.
If no tunnel goes forward, then people must plan to leave early enough to ensure they make their flight on time.
Edit: The current lady got pretty worked up over a hole in the ground! Think of the children! We must have the tunnel!
Edit 2: For the record I am all for the tunnel, but I don't believe the airport authority should be footing any part of the bill. They have given the city plenty of notice on the parallel runway project.