The announcers are former distance runners. What they said was completely out of line.
I am an official, but I'm not a starter. What I do is start adjacent, and in the case of some DQs, I actually ask them the logic, as it can be interesting.
First of all, don't contact the starter personnel. In some states threatening sports officials is a felony. I feel like the post was joking, but seriously don't do this.
The logic here appears to be 1) it's Nationals, they shouldn't be DQing people for minor infractions, or 2) the officials have the authority to NOT issue a DQ, and they should have.
1) Nationals should be at the highest standards. So, any infraction should be called.
2) It's hard to tell what happened from the video, but in most college meets this will be a DQ, unless there's some sort of mitigating circumstance, like noise from people around the start area, a gun issue, or another competitor taking too long to get to the line.
That said, I don't like that this call was made by an official on the outside of the track. It was his right to do so, but I feel like his view wasn't the best.
I think one thing that he had going against him was his position, he was closer to the start than anyone else. They guys on the outside were further back from the line, when "on your mark" was called they took a lot longer to get to the line because of their position.
One further argument is that he shouldn't have been DQed because his team was in the hunt. Officials truly don't care about the team involved.
I don't think this call is going to happen outside of a championship event, but considering it WAS a championship, I understand why it was a DQ (or FS, technically), rather than a green/yellow card.