Not necessarily. I don't think it's up to us to automatically judge something different as worldly and wrong. We shouldn't judge the motives of other people's hearts just because they aren't stuck in tradition.
In my experience it wouldn't be needed, because we have a small church and lots of other opportunities outside of church to drink coffee or fellowship. This wouldn't work with the appalachian culture here, but I cannot speak for other, larger churches. If being all things to all men wins some, I cannot condemn them.
After reading the other thread about eating out after church on Sunday, I wonder if having a church-run cafe would help eliminate some of the problems talked about in that thread. It's something to think about, anyway.
I disagree with the bolded, enlarged portion of your post. (UNless you are strictly talking about the area you are in..) because South Parkersburg Baptist church has a very effective cafe ministry. (This is the church I was talking about in an earlier post our state convention was held there a couple yrs ago, and I LOVED the internet cafe between services!)... So it does work in WV.