This tweet made by the company is a general statement which is used to intrigue the viewer into reading more on the FiveThirtyEight webpage.
By comparing Comey's tenure to other FBI directors, they attempt to peak viewers interest into viewing/reading more about the incident within the FiveThirtyEight site.
Once again, through posing a question on the most popular social media site, they try to intrigue viewers to read more about it on their website.
The repetitive tweets about the issue are made in order to be seen by everyone, making sure nobody misses the recently published article on the Comey-Trump fiasco.