It does most of the time, especially in a game that was delayed for 6 months...unless you are suggesting they just come up with the idea out of the blue after completing the game. Even if it is worked on after the game is completed, it is still planned beforehand. Take Mass Effect 3 as an example, with a Prothean character perfectly integrated in to the story as day one dlc
Just because it is planned to be day-one dlc doesn't mean I like it, in fact it makes it worse...I've got by for 20 years without playing games with day-one dlc.
But that's what I'm saying the DLC was obviously planned from day one, to make a judgement that you're not getting your money's worth because they deployed it sooner is just arbitrary.
I believe that all content developed before release should be in the game, bar cosmetic crap, I'm fine with them selling that.
But when you're buying a game do you check the developer's schedule to check that no DLC was ready before release despite not being available at release?
Look at it this way:
Company A develops a game called Facebuster 2014, the decide that this game will have DLC and put aside 10% of the budget they have for the game to developing the DLC, company A decide to develop the DLC alongside the main game to release it at launch.
Company B develops a game called Legbuster 2014, they decide that this game will have DLC and put aside 10% of the budget they have for the game to developing the DLC, company B decide to develop the DLC alongside the main game and release it 3 months after launch.
Company C develops a game called Armbuster 2014, they decide that this game will have DLC and put aside 10% of the budget they have for the game to developing the DLC, company C decide to develop the DLC after the launch of the game and release it 3 months after launch.
Company D develops a game called Buttbuster 2014, they don't think about DLC so put aside no budget to develop it, Company D complete the game and then decide that they could make a little more money from this so they hold back some features from the game and release them as DLC 3 months after release.
Assuming they all have the same original budget why do some of those companies deserve your money more than others based on the date they release their DLC.
They have all put in the same money up front and are all making the same money from the end user... Why draw an arbitrary line in the sand?
Whether or not the DLC is launched at release or launched months later it still costs manpower to develop and therefore money. If you don't buy games with day one DLC and one day it ceases to exist you will not be getting more value for money DLC will just be released after launch.