I take issue with the title of the blog post currently highlighted on so many SE pages.
The title says: "Adios to Unfriendly Badges: Ahoy, Lifejacket and Lifeboat" which leads one to believe that the unfriendly badges are "Ahoy," "Lifejacket," and "Lifeboat." Veteran users might think it strange that these are unfriendly badges and don't recognize them as having even been introduced, because they hadn't previously been!
Also, the blog post mentions nothing about Ahoy, which is not a badge, but given the badge naming conventions, could be one issued for extending a hearty and friendly welcome, especially if trying to contrast "unfriendly."
At the least, I would use an exclamation point instead of a colon. Better would be to also name the "unfriendly" badges being removed, as it's not clear to all that those are unfriendly (see other answers here).
For example: "Adios to Unfriendly Badges Tumbleweed and Reversal. Ahoy, Lifejacket and Lifeboat!"