I'd probably be a bigger fan of this model if the dm's I play with don't immediately get disinterested the minute the pc's do anything heroic, and start talking about resetting to zero.
Zero to still zero is not fun for me.
Wouldn’t be fun for me either. Goes back to the contrast I was talking about. Without being able to do heroic actions at some point, the gritty realism would have no meaning. Being able to look back and say, “man, it was a rough journey and we overcame x and y challenges with just our wits, but look at us now” is a lot more fun than “what are we even doing this for if it’s just gonna be rough all the time and we can’t ever do anything awe inspiring?”