Most (at least with western games) DLC isn't content that was cut off to be sold later. Leave out the worst offenders like Capcom and that simply isn't true. Developers have explained many times that there is ALWAYS more content proposed and written than they can include for logistical reasons and there are always ideas that won't fit without side-tracking the game. Some DLC draws from that, some is totally new.
Some DLC is bad, some is excellent, and some simply average. Off to the side, you have the fluff, which really shouldn't bother anyone. Complain about the bad, that's totally fine, some of it no one should buy, but there is a lot of really good DLC out there that I'm glad I bought.
Quite honestly, I won't be very happy if a game I liked wasn't getting DLC on my favored platform. I was pissed off when I found out that the Fallout NV DLC was a timed exclusive for the 360--especially New World Blues, which was fantastic. Just putting your head in the sand and saying, "oh, but DLC isn't good, anyway," isn't a very good response. The best thing would probably be to bitch at both the publisher AND Nintendo.
