People also forget that Theres so many algorithmic proofs that have been published theres so many implementations that can be made for BTC and basically infinite paths in development
That's missing the point of "work". More efficient miners means increased difficulty to stick to one block every ten minutes. Asics may end up being ruled out of the mining game by quantum computers, but the energy gains would only be short lived, untill new quantum entrants come in.
Bitcoin mining consumes an incredible amount of electricity. That's why researchers have recently found a way to significantly minimize power consumption by using a quantum computer.