Although I’m sure Zuck would have turned them down regardless.
Would they pass up booking.com solely because it's Perl? The value there hasn't much to do with the plumbing.
I’d wager they’d take a closer look these days.
That said, there is a lot of poorly written legacy php code out there before frameworks really took off for that language.
https://np.reddit.com/r/Windows10/comments/74xc2z/windows_an...
Although I’m sure Zuck would have turned them down regardless.