What are you on about? Go
here, there are over 2k posts, while I haven't read all of them but tons of GTX 970 owners are facing problems. And please don't expect me to read every outdated post you throw at me. I did, however, read the conclusion and even the article you cited clearly shows there's a problem for multi-GPU owners and the author says the difference of 512MB is nonexistent, how stupid is this.