The general measures of things like this are: is it causing a negative effect on you or others?
In a similar vein to pooping some people do every day, some twice or more, some a couple times per week. There's a range of normal. If it's not bothering you or anyone else it's probably fine. (Though see your Dr if you only poop once a week, something's weird there).
Yeah the story for tunic and what's going on underneath all the happy Zelda like over world was pretty jaw dropping. I loved that game.