Twitter validated it's own employee count with an absurd overhead.
It has concerns of scale, performance and user experience. So does GitHub, Shopify, Pandora, Spotify, Snapchat, LinkedIn, MailChimp, WordPress.com, etc, and yet, manage will much less resources and overhead. Oh yea, and fucking Netflix - which - as far as I can tell - has much more and difficult problems to solve at a much faster pace. They employ 4,700.
As of this comment, Twitter employs 3,583 people.
What they needed to do was hire 100 talented people, allow third-party clients, try and occasionally acknowledge the developers who implement their platform, and stopped with the asinine "we're trying so hard guys" blog posts. We get it. You're having a hard time and you want everyone off of your grass. That's fine, but don't come asking for sugar at my house 'cause you ain't Beyonce.