I don't know where all this DLC hubbub is coming from, but I see it posted everywhere. It is a meme propagated by self-entitled moochers without any sense of history. Nobody is forcing you to buy DLC, if you don't think a game or DLC is worth the money, don't buy it. Simple.
I can think back through gaming history, buying Ultimate Doom; an expansion which would create furor in today's climate. I also bought Quake and QuakeII expansions. Even going back to the 80s where games like Mercenary had the Second City expansion.
Thinking about it, I can see a parallel in the recording industry where we would buy LPs, with select songs being sold as singles often with good B-side tunes. Should the B-side tunes be given away free to those who purchased the LP?