I have no reason to believe either of you- neither of you have provided any evidence to back up your claims. I can, however, see with my own experience that the level 1-17 content is finished but it is subjectively boring and objectively broken. Honestly, this puts you in a no-win situation when trying to defend the game to people who had a similar experience as I did with the stress tests.
Do you think the level 1-17 content presented in the stress test is finished, good and bug-free? If you do, then we disagree and I could never trust your judgment that content level 17+ isn't subjectively boring and objectively broken. If you admit that level 1-17 content has these problems, it would stand to reason that the level 17+ content which has undergone no stress-testing is in a similar (if not worse) state.
I cringe thinking of re-doing another faction's newbie quests as "endgame." To be fair, that article is almost a year old- he doesn't even know if raids will be instanced or not at that point. Here's something funny. That was written March 19, 2013. In your article, Sage says there will be 24 man raids called Adventure Zones.
Here's another article written March 19, 2013 with a quote from Firor.
So on the same day, Firor and Sage had interviews and said completely opposite things.