Yes. That's why it's called GUIDELINES. "Primary" means "the first one." And if there's no SECOND type of bullet, then this is the ONLY bullet type and there's no need to imply that there are other types. This is a now way to handle the situation when there IS more than one type of bullet. Previously, there was not a provision for this and now there is.
"Guidelines" means that everything is not spelled out and that transcriber are encouraged to use professional good judgment.