Thank you for the PSA, Shaysinn. I found this out about a month ago with my bartending post. I was so fuming that I have lessened my involvement with the forums, mostly due to being busy, disappointed, and burnt out.
I posted two threads about the edit timer which may offer more information. Please feel free to add your voices to them! The more Blizzard knows people are displeased, perhaps we can actually reverse this.
Website report section: Forum Post Edit Timer Feedback [FIXED]
Customer service: Forum Posts Unable to Be Edited After One Year [FIXED]