Hang on, this is the discussion section. The entire post is an invitation to discussion - that is not just its primary, but practically its sole purpose.
Do you suggest a move to Main because more people read Main? That may be true, but anecdotally at least one person reads everything on the site. Furthermore, it seems like abusing the category.
Is it because Main posts have higher status? That's.. probably true, but again seems like conflating category and status.
The solution is probably a code tweak, so although I'm not trying to oppose the move - you're probably right - getting to the bottom of why it's a good idea might let us avoid this situation in the future.
Because Main is for higher-quality posts that people who don't read Discussion read, and then Promoted is for even higher-quality posts for people subscribed to the Promoted RSS feed?
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.