I've heard the CM team talk about this a couple of times, they keep saying that when they added the velocity restriction there were more people on. But I kinda disagree since we have 0 players and before it got added we had like 7 players or more.
I just think we have to remove it, but I will bet that they will deny this suggestion again because they will use the same argument.

When it was added there was indeed more players due to it being a huge change to the server and people wanting to check that change out. It has since died down to nothing because there is no single player who plays deathrun actively and wants the restriction.