This seems odd. It feels unfair to shame companies because they may or may not contribute to a handful of projects you've picked out. I'd also encourage the author to do a bit more digging. The first entry calls out Instagram for allegedly not contributing to Django but they have a fork of it here: https://github.com/Instagram/django and without doing much digging, it's easy to say they've contributed at least once.

Several of the companies listed make incredible contributions to OSS.