Wrong why?
If we keep accepting unfinished games, the devs will never learn.
If noone complains no more effort in releasing finished games will be made.
My point is, to defend it is counter-productive, you're making excuses for something that will ultimately just result in even more unfinished desperate-need-for-patches products to be released in the future.

If we EXPECT games to be unfinished, and in need of 2-3 patches 5 months after release to be feature / balance finished, the developers will ALSO expect that, and take it for granted, even include it in their development and release schedule. If we however stop making excuses for something we pay for (our money should be enough support, they dont need our emotional support too), then the devs will also see the error in releasing stuff that NEEDS patches to be finished.