He used the right word, I used the wrong one.

Majority means 'the greater number', to me its pretty explicit, but I'll accept that it is implicit if it makes you happy.

It's explicit to me that your only rebuttal to claims that (in summary) "51% is a majority, this is consensus, it is implicit/explicit" is pedanticism over the linguistics.

Unless you want to argue about what the word majority means then we can agree that the definition amounts to 'the greater number'. So if it was 3 vs 1 that would be a majority. If it was 1000 vs 999 that would also be a majority. The 51% figure has been commonly used recently to express hashrate majority, but it is probably more accurate to state >50%.

Take a look at the closing sentence in section 12 of the white paper.

"Any needed rules and incentives can be enforced with this consensus mechanism."

The phrase "this consensus mechanism" refers to the immediately prior descriptions of the mechanisms that detail how the majority of CPU power will prevail by working on the chain they think is valid. If >50% accept and work on blocks that follow particular rules then inevitably leads to that blockchain becoming longer over time. The longest chain is the valid chain (as per the line in the abstract which states: "The longest chain not only serves as proof of the sequence of events witnessed, but proof that it came from the largest pool of CPU power.")

So the white paper explicitly states that consensus is achieved through a majority of CPU power. It is implicit that majority is >50%.

This is all logically and linguistically consistent (subject to Skitt's law!).

This OTOH is your opinion: