Agreed on Point 1.
The DePaul analogy is ridiculous, but I get your point. We aren't talking about the worst team in a major conference. We are talking about a team that you have to admit was pretty comparable to other bubble teams. Every at large team can be argued against not belonging that doesn't mean they shouldn't be in.
You have said VCU shouldn't have made it because it was a weak bubble and they did nothing to elevate themselves above other bubble teams. The same could be said for Colorado and Virginia Tech.
Since we will never know who is the better team between Virginia Tech and Virginia Commonwealth, I think its fair to look at the tourney and validate the selection with the run VCU is on. How else would you like to judge the job the selection committee did, look at rpi's on selection sunday and judge then or see how things play out?
It may not be fair but talking heads look at conference records in the tournament to show who is the best conference. It's obvious you don't agree and thats okay, but I want to know how many Virginia Tech fans are complaining about being passed up for VCU today. My bet would be less than the fans complaining about UAB and USC.
I admit the NCAA surprised ESPN but that doesn't mean they screwed up. Virginia Commonwealth didn't cheat the system or get in on an error. They had just as much of an argument as other teams (see SelectionSundays post). If you are sure VCU didn't belong you have to say the same about USC and UAB.
If VCU got run out of the gym in the play in games, the national media would have been talking about how they didn't belong much like they did with UAB. When they win three games in a week its just as fair to say they showed they belong in the tournament.