Is there some reason that you feel compelled to participate in this? I mean, if it's happening in your SP campaign, it's happening because you allow it to happen. I don't do this, I tend to rest when my session is over. I use food for healing after fights, and I try to not expend all my "Oh crap" spells, just in case something big comes up. What I find hard to believe is that someone in France doing this is going to somehow adversely affect someone in Canada. Especially if they're not in a MP session together. To me, this is akin to being upset that someone rolled up a female Drow wizard, when everyone knows that only male Woodelves can be wizards. In other words, this "issue" is really a non-issue, because if one is dead set against it, they are more than free to not do it. It's not like the game forces it on us, after all.
So no, I don't think that George resting after every encounter is a problem, if that's the only way George can play. George did, after all, spend his money on the game, the same as I did. I think it's a rather silly mechanic, and won't be using it, but I'm certainly not going to be prepping up the bonfires, and sharpening the pitchforks over it either.
With all due respect, if we have to think like this there is no reason to improve the game outside bugs and crashes.
Is there an unbalanced class? Don't use it.
Is there an unbalanced spell? Don't use it.
Is there an unbalanced mechanic? Don't use it.
Is this an unbalanced game? Don't play it.