When we reach billions of people adoption, they will utilize whatever phrasing we use. Do we change things now, co fuse the shit out of everyone, right as we are on the cusp of global recognition and serious consideration?

Or do we demand a little bit of simple proof of work for people to learn?

This "change" obviously does not have consensus. Not everyone will convert at once. There will be a period of time when 1 bitcoin =/= 1 bitcoin. And even if they did you have an existing body of work that will never change.

Bitcoin vs bitcoin is already hard to comprehend for most.

Now youre asking ppl to comprehend Bitcoin vs bitcoin vs bitcoin.