First, the discussion was about being able to heal up fully between every battle. That's as much healing as you need. If you want to characterize it as that instead of unlimited healing, go ahead.
Second, you absolutely said things that lead to restricting how DMs can run, you just didn't realize that was the consequence of always being able to heal up full between battles. I was letting you know those consequences, that you were removing one of the main tools DMs had for doing attrition-based adventures, thereby restricting them to a different style.