I guess it is still an assumption when they use Russian emails, submit through API, and are so formulaic as to be near identical ... but maybe it was legit. Sure.

https://www.bloomberg.com/news/articles/2017-11-29/fake-view...

https://www.wired.com/story/bots-broke-fcc-public-comment-sy...

https://www.washingtonpost.com/news/the-switch/wp/2017/11/24...