It doesn't matter what the hash is if it is inherently cheaper for a bot farm to compute the hashes than it is for a human to do it on their device. The human p

It doesn't matter what the hash is if it is inherently cheaper for a bot farm to compute the hashes than it is for a human to do it on their device. The human pays a greater cost in annoyance, wasted time, battery, and that means the PoW has failed its function. The bot farm owner does not care.