For strictly playing games, I don't think it's that big of a deal to pass a drop eval.
The zero board is open every morning, and PRS matches will frequently have zero boards set up every few stages. You have 45+ minutes between stages. If your rifle falls, you just run over to the zero board.
All the guys who win are shooting Kahles, Vortex, and Leupold for the most part and they generally don't really care if the zero is off, they just want to know where the zero is and then adjust the zero offset in the kestrel.
When you're constantly shooting, losing zero by a tenth from the car ride in isn't that big of a deal. The much much more common issue I see that causes disaster stages is improper scope/ring mounting, loose action screws, and mags that won't feed.