This is not a troll. You have to be legitimately stupid to be in such a position of power as Microsoft, and then to waste it all and to voluntarily hand it over to Apple.
The fact that Facebook even responded reeks of fear.
If the original article had been completely ridiculous, Facebook could've laughed it off and wouldn't have had to respond at all.
It's like if someone tells me I'm fat. Because I'm in good shape, I wouldn't react and just think the person is weird for telling me that. But if I was anywhere close to overweight, you'd see a strong reaction of some kind from me.
What the reaction is doesn't matter so much as the fact that there is a reaction.