Personally I understand the mixed feelings. I do not advocate day 1 DLC. However, to be honest, if I take the amount of time I've spend into EU3 and the loads of fun I had with it into consideration, I am well-willing to pay 5 Euro extra to support Paradox Interactive. Nowadays I feel like a shunted gamer. The industry I once loved became too much of a commercial success. Every time it leaves me with an empty feeling when I play a new game. Grid 2, Far Cry 3, Assasins Creed 3, they are all great games I've pre-ordered, and nothing but credits to the developers. However, they do not give me the joy I had with their prequels. Maybe I am to much of a nostalgic person, remembering the times I worked for Codemasters and hoped to be a part of the reincarnation of Operation Flashpoint but was left with an empty feeling. while I am not saying the game was necessarily bad, it was not able to catch the atmosphere the original did.
To get back on topic, the sheer lack of developers that still listen to their community is tearing down my interest in gaming as a whole. However, playing EU3, or Victoria 2 for some reason never becomes a boring thing. While it is anything but nostalgic for me (since I 'only' became aware of the games around 2010 or so), these games still pack a certain feeling. A feeling that is worthy of the extra money. I see a certain kind of affection between the developers and the community, a kind of affection that is non-existent in many other places.
Despite that, the mixed feelings that are being raised within the community should be taken seriously. DLC can definitely work as a boomerang. They generate profit at first, but those that 'dissent' may become more reluctant in buying games in the future, which causes an overall loss on the long term. For me personally, I am somewhat eager to buy 'everything they throw at me', yet the problem should be reviewed upon with respect and consideration from the rest of the community and from the developers' side.