No one is saying that. What we are saying is that the herp world is very small and if you start off with pairing critters you just purchased before they have cleared QT, word will get around very quickly and you will torpedo your reputation before you hatch out your first clutch.
Before you start pairing your snakes you should have already have in place:
Incubator + high quality proportional thermostat, tested
Hatchling rack + thermostat, tested
Contact info for an exotics vet, hopefully one with 24/7 emergency hours so when you find your female is egg bound on Saturday night you don't have to wait until Monday morning to get treatment for her.