I didn't say impossible, but like the Sony rumor, it doesn't make sense. In fact, this rumor had even less attention than that one. Buying the company would be one thing. Randomly buying properties? Nope.
A better question, what makes this rumor any stronger than this one? The answer should be easy, and it was debunked after the one in the OP.
I'll agree with you and say that it doesn't make too much sense in my eyes either. But MS buying Minecraft for that much money didn't make much sense to me either at that moment, and it happened. But people keep pointing out how hard it is to buy a Japanese studio, so keeping that into consideration, wouldn't this be the second best option? I mean, assuming that the price is right, of course.
And to answer your question; no. This rumor wouldn't be any stronger than that one, but I also gave that one the benefit of the doubt. At the end of the day, it wouldn't be the first time that a seemingly impossible rumor ended up being true.