It rubbed me the wrong way, but not so much the fact that they were selling DLC, but that they were selling DLC when the base game is in such a horribly optimized state. Of course people can say 'oh the same developers would definitely not be working on the DLC as the base game' but wildcard has around 30devs, 20 of which are designers/artist types and only 4 listed as 'engine'. So if you now start requiring all these new elements from your DLC to be supported in the game engine that takes away those core devs time from actually fixing bugs and optimizing the game and making it playable instead of 30-40fps on gtx1080
Hard to get excited about DLC when the majority of the player base has to look at a pixelated mess to play the game. I really wouldnt have an issue with DLC if the game ran the way it should at this point especially when they initially planned on releasing this summer and the game runs in no way close to a game that should be released soon should. If it did run well and your close to release, then sure add in content and sell all the dlc you want.
I suppose that has always slightly pissed me off about ark though, once I got the 100th daily update of adding such and such plant, or such and such mouse to the game instead of fixing real base issues I uninstalled. They have had various 'optimization' items listed in their 'coming soon' list for a year, an entire year