My advice to the op is to not care if you complete the newest/latest achievements. Let it go.
Choose the stuff you're interested and play it.
That's how I've been doing. For example with the previous content, SAB, I didn't care for it, it wasn't something that interested me, puzzle jumping with bad graphics and 8-bit music, a lot of people liked it and that's great but I wasn't gonna waste my precious time doing something I didn't want to and so took a short vacation from the game just loging in a few times to do some pvp.
If you can detached yourself from the need to complete everything and not worry and feeling that you must login everyday you'll start to enjoy the game more.
Well they can't profit off it, so I guess no point in putting much effort into it.
Out of topic:
This maybe shocking to you (or not if you're not naive) but every game and every gaming company needs to make a profit.
I really don't understand this notion that Arenanet and others like Blizzard or any other gaming company are just some greedy bastards because they try to have a profit or make the player spend money on a game.
For someone to spend money the developer needs to make a good product, this is true for every product be it a game, a car, a movie, whatever.
Now of course there are companys that don't care about making a quality product, they only care about making a quick profit with a bad product.
Saying or implying that Arenanet is one of them is to me profoundly unjust and hurtful to the developers dedication and shows a profoundly lack of knowledge of the game you're playing.
I agree with dzanikken that sometimes people overthink this stuff too much.
The type of reward we received it's pretty much on par with other games out there.
It's a small vanity item. It's not the greatest thing in the world. It's symbolic. A token of appreciation for playing the game. That's all there is to it.
I agree I like this patch. I want to do the activities and complete the achievements and not because there's a reward or for completion sake, which was the feeling I had on previous patches.
Also, I haven't seen many opinons on the new pvp map but I like it, even if at first was kind of strange, but it's different with traps and platforms and great atmosphere, adds a nice diversity I think.