Where would you find a 17rd AICS mag? Or a bolt action AI rifle that takes belted ammo? You're speaking in hyperbole. It's not reasonable. But a 12 or 15 rd AICS mag is. I mean what if someone made a 20rd double stack, doublefeed SR25-type mag that allowed a 2.990" COAL in a AICS footprint that fits a R700 custom action or ATX? Would you scorn the manufacturer or would it be a step forward? Why would you resist forward progress? Do you think you are a more pure subscriber to fundamental skills than I am? Do you think you've dedicated more time to speed mag changes than I have in my life? I doubt it.
Sometimes material solutions outweigh training solutions. Yes training is important. But don't be stuck in the past. As far as why do PRS match directors do what they do, I don't think they know why. They do a lot of monkey see, monkey do shit. And contrived, made up shit. But as far as pushing past 10rd stages...why is every stage 10 rds? Why don't we shoot 20 rd stages? Or 30rs stages? Bring it big shifter.