FB is different just look at their past acquisitions like Instagram and others, they all survived and are still in active development and rolling out new features.
If it were MS/Google acquiring Oculus, negative reactions would have been justified.
Oculus is a completely unrelated avenue for them, and one can only wonder what their intentions are. Zuckerberg already made a PR statement that the company intends on turning Oculus into a social platform of some sort, so this does raise some eyebrows.
As much as I have ethical quandaries with Google, I'd be more content if they had acquired Oculus.
Google has been a long time advertising player that only recently got into hardware.
Mark Zuckerberg.