OpenSSH, PF, LibreSSL etc are the things that are incorporated in FreeBSD that were made by OpenBSD developers. Why FreeBSD people dont make it their own versions especially for security things. Why letting OpenBSD people proud of the "most secure operating system on planet status" by getting theirs. Sorry about my wording but I like freebsd the most as it is complete OS with better documentation best community but just one thing when google openbsd "the most secure OS" I feel my FreeBSD somewhere lag behind in security thats why It is noton top of the list.