Here's the "low-effort" image that got my thread yanked off of the SWTOR subreddit. Apparently on that subreddit you can't have an image that has the UI but how can you show the achievement without having the UI?
I have seen various bashing for UI layouts in the past, yes. Whether that is the actual reason (plus lazy mods not wanting to deal with it) I don't know. That just seemed like an obvious answer to what otherwise seems a completely arbitrary rule.