I watched a chunk of it (mostly to see equipment), and I was also amazed on the lack of even the slightest precision to the marching. Most of those soldiers looked like they were at the end of a 20-mile hump.
The announcer's voice was cloyingly annoying, but I did pick up on a some things he said. He mentioned a "diversity" quite a few times when talking about different units and how they represented the "diverse" people of the US. Another thing was when talking about the history of the 101st Airborne he only said a few things and ended with how they were tasked with protecting Civil Rights protestors in Little Rock. I'm guessing Stephen Miller didn't review what was being said.
As far the cost, $25-45M was just the Army's cost, that's it. It did NOT include police, FBI, Secret Service, et al, barricades, spectator stands, fireworks, closure of airports, etc. I also don't think it was a full estimate of the road and bridge repairs.