Desmond, the ETL forum has two main purposes: 1) it's for anyone eager to learn more about photography and 2) to get used to being "critiqued" by others.
As a moderator of this forum I would hope that people new to photography (or new to a specific genre of photography) would post here so we can help them build their knowledge up AND so they can then feel more comfortable about posting in the other critique forums. Some people choose to stay in ETL because they started here and they always want to learn more - and that's perfectly fine.
Sometimes, though, we all just need a push to go 'run with the big dogs' so to speak - and when someone takes an incredible image (like this one) I think it (and they) deserve that nudge to show off what they did.
It's really a case by case basis, though, as some don't need the encouragement - they post to the other forums when they feel ready but still hang out here for the learning experience. If everyone is telling you that you got it right - and you did get it right - then I feel it deserves to be shared with the other forums.
Kristin is welcome to post to any forum she chooses (as is anyone else) but you'll never grow to your full potential (IMO) if you don't go run with the big dogs now and then. Sharing a great thread with the other forums helps people make that transition. I personally think 90% of the images posted here (as well as the posters) could hold their own in the other forums but I welcome anyone to stay and post here when they want to learn more or have questions about their image or they just don't feel ready to move on.