It is certainly cool if we disagree. But you just AGREED. "such a thing didn't exist in 1E".
This has been covered more than enough times in the past.
Not only is the point that HP represent more than physical damage accepted, it is greatly embraced by throngs of people who still loathe surges.
Go find a surge thread if you want to see that conversation.
I agreed with your premise, that surges did not exist in 1e, but not with your claim that surges do not hold up to inspection - that is subjective. I also added that while I'm not opposed to surges, I'm not "married" to them either. I believe non-magical healing has a place in the game, just in more meaningful ways than how they were handled in previous editions.
Short story: In my opinion, the core of the game should assume a type of non-magical healing, and that there should be options for that mechanic that fit into particular styles of play (either surges, short rests, extended rests or otherwise).