I'm half-way on the OP's side here. I also missed the first time, due to personal RL reasons. I've been able to speed-level one character to 45 to get the gear, but have realized that I won't be able to do so with any of my alts (i.e. my female alt, to really get all the event gear). So I gave up on it -- way less stressful that way. Especially as I don't like to speed-level; I want to take my time and explore and socialize with friends.
I don't mind there being high-level events in general. While it's frustrating for the low-level players, it gives something for the higher levels to do outside of raids/instances. But what bothers me about this quest is that all the rewards, including the ones from the Lv.45 quest, have a level requirement of 13. So basically you level up like heck to get good enough to do the quest that gives you the reward that would have been useful back where you were when you started the first part. (I'm not going to go into my annoyance over the lack of balance between the event weapons.)
Sure, there's the "bragging factor" of it, of having something unique and later unobtainable, but other than that... Meh.