Cite your sources on your bullshit claim, first of all.
Secondly, you're comparing a dungeon/tier locked event to an expansion wide event. The cloak/ring were intended from the get-go to be time sensitive. It's not the McRib. I don't have to "justify" it's removal, it was designed/sold as a time sensitive event. The time has passed. Justify why you deserve to have access to these events.
Other time sensitive events have come and gone. Brewfest? Time sensitive but annual. Scourge invasion? Time sensitive but once in a lifetime.