Some communities exist for a single purpose. Rule 2 on that subreddit: Posts must ask for advice. If you want to loop the community in on your personal story, you do have to post it elsewhere.

It's just like this community - we don't allow offtopic posts either. Except instead of a small modteam, we have people who have a certain amount of karma to "remove" (bury) the post.

No idea. I'll note that the original post was to /r/Advice, and the removed update was to /r/relationship_advice. No idea why they switched subreddits, but I expect that was part of it.

r/BestofRedditorUpdates is probably my new favorite sub, and I appreciate the legwork people put into gathering the pieces of posts into a coherent and satisfying story.