No it hasn't. I'm a very happily married man who uses Facebook to talk to friends I haven't seen in a while. I have no interest whatsoever in romance (of other people than my wife!).
Just because you don't use it that way, doesn't change that FB as a dating site is and always has been a major use case. The GP never said "exclusively a dating site".
Much like stating "linux has always been a workstation os" doesn't invalidate the people who only have used it as a server os.
I'm curious about this. How many people actually use it for dating? I encourage you to prove that it's primary use case is dating... I would strongly suggest it is not!
As for saying that "Linux has always been a workstation OS" - clearly that is wrong. So yes, it doesn't invalidate those who use it as a server OS - it just means that it was never only a workstation OS.
