That's what I thought at first but there are two other issues. League gets 3 v-merits per pylon. And apparently there's some timer that starts with the first pylon down.
Honestly, I don't consider either an issue. If someone is really going to freak out about the loss of 3-15 v-merits, that's their problem. And since even if a pylon respawns while the league is clearing the remainder of them, so what? They have to go an extra few hundred yards to spend 10 seconds taking it down? At first I was angry at the attitude, then I calmed down a bit and listened to the rationale for complaints here on the forums and in general chat, but in the end, I ended back at "fark 'em, ain't their zone, I'll do my pylon testing when I damn well please."