Did you even read the article? There are a number of quotes from people in the article that say what Google is doing here is definitely wrong.
This is the article which I read:
Twitter: Google is blocking us
Reporter: Blocking twitter is evil
Google: WTF? Twitter told us (and they really did) to block its links!?!
Would Google have G+ suggestions AND Twitter suggestions presented in the same way if they still had an agreement w/ Twitter?
Would the G+ suggestions be wrong if they still had the Twitter suggestions?