Yea, that thread was later updated with a dev response:
Unfortunately it looks like that agent handed you some outdated information. Players will in fact be able to apply CE items to their existing characters. All CE items are available to any character on an account where the registration is applied. This includes existing characters (1.0 created characters), and new characters (characters created now and going forward on that account).
Sorry for the mix-up, we'll work harder to make sure our agents are working with the most up-to-date information to prevent miscommunications like the above.