If your light level did not matter, then I would agree, but customizing your armor while keeping your light level is a totally different story. Before the DLC you could only get to 30 by having 4 raid pieces or 1 exotic + 3 raid pieces. To get to level 32 in the TDB you must have the same set up but with the new raid gear. Does that sound 'Fully Customizable' to you ? And yes, it does matter if you want to play the end game content and do well (Iron Banner, Raid on Hard, upcoming Trials of Osiris). So yeah, if you don't care about your light level you are technically correct, but since most people care about their level you are wrong.

Well, there still is customizable armor so. Bungie didn't lie

Also, may I ask what your gaming background is ? I think part of the issue is that you might be coming from primarily an FPS background. The issue that Destiny is facing with many players is the meld between different genres, which is admittedly difficult to do and props for Destiny trying to accomplish such a task. Many of us have had experience with RPGs/MMOs and thus we are bringing those expectations to the table when we play Destiny. Now, that may not seem fair to you, but when you say that your game has RPG and MMO elements (paraphrasing), we expect non-trivial RPG and MMO elements, especially since many of these elements have already been done very well. Bungie simply needs to incorporate them into their game rather than re inventing the wheel.

Oh no, I realize that, all I am saying is that they made it sound more robust than it was. When a large portion of your community has played Skyrim, WoW, and Borderlands (games which are currently defining the industry standard on the elements Destiny is using), we just have expectations (very realistic expectations) that customizable does not mean switching out a helmet for a chest piece. I would not say they lied about this, I would say that they were misleading.

You can widely customize it. People are just making destiny their own game with their own objectives