A large miner would only need to divide his hardware setup into clusters that pretend to be different independent miners to create these "miner tokens", as explained before, to significantly raise his chances that he on nearly every single round would be able to mine.
Once each individual token is about the expire, the number just dedicates a fraction of his mining power to renew it. At the same time he can even create multiple new tokens given enough hardware.
This does not reduce energy use. The only notable effect is to delay income for new miners. This makes profitability calculations more annoying.
Long term, it only behaves like an artificially raised difficulty target.