Why did a post with 1055 upvotes disappear?

A question for Dang: what happened to his article posted 3 hours ago [0] and which accumulated 1055 points? Why isn't it on the front page?

The link is [1].

[0] https://news.ycombinator.com/item?id=38519012

[1] https://live-whistleblower-aid.pantheonsite.io/joan-donovan-press-release/