From Bitcoin Paper by Great Satoshi Nakamoto Himself:

"They vote with their CPU power, expressing their acceptance of valid blocks by working on extending them and rejecting invalid blocks by refusing to work on them. Any needed rules and incentives can be enforced with this consensus mechanism."

What is there not to like or not to understand? Bitcoin works exactly as intended, miners enforce consensus machanism with their CPU (ASIC devices these days) power. This is Proof-of-Work at its best.

Read the white paper. Is the white paper not relevant today? Should the white paper be re-written to include other consensus mechanisms?