The Firebird
Hero
The key part of that post seems to me "you can't go off into the trees to look for herbs the way we can". Retconning is different, for reasons @Lanefan and others explained. In my game, if you go look for herbs there's a chance you can get a random encounter. That encounter could be major. Maybe you encounter The Willowman, a powerful fae creature (Cursed Scroll #1 in Shadowdark).Here’s what @Maxperson said:
I then offered my solution to this “problem”. The solution I offered works for me and my players.
It seems to me that I’m being told it doesn’t work.
Maybe you choose violence and it goes poorly, resulting in character death. Maybe it goes well and The Willowman becomes your patron, and you gain a new quest that makes you not want to go to the city.
Either of those breaks continuity.
Again, I'm sure it works for you in making it feel like you can make these minor decisions. But for me it doesn't achieve the same thing as it would without retconning.