Did they not make the change yet to one long first SWO divo tour vice two divo tours?
Wouldn't really matter for orders anyway, since CO tours are <18 months. Even if you fleet up, depending on their timing it might be your second, or even third CO that has inputs on your orders. I went through 3 COs on USS First Ship, and none of them got fired.
As Guru says though, multi-tours are still the norm. There's the option to fleet up on a single ship if your CO wants you to stay on, and there is a billet opening for you (i.e. someone is intended to leave around the same time you would complete your training pipeline), but that's not guaranteed or the norm by any means, especially since they've created a huge number of new 2nd tour jobs on MCMs / LCS / CVN that need to get filled (with no 1st tours on them to fleet up even if they for some reason wanted to).
I tend to think fleeting up is a pretty poor decision professionally. There are a bunch of highly valid personal reasons for it (staying in the same home port, ensuring you'll see a deployment or downtime, not risking orders you don't want, etc) but professionally the trade off in terms of opportunity to reinvent and develop yourself at your second command, as well as see other ways of doing business and (likely) other platforms is pretty damn high. Especially since your next ship ride thereafter is as a department head.
Your first ride is essentially your screw up and figure it out ride. Your second is application of those lessons. Putting them together on the same ship has the potential to significantly stunt your growth, as instead of having to develop fresh relationships from a different position (of having knowledge, but not knowledge of the new ship) you essentially tread the same ground. There's also a tendency for a lot of enlisted sailors (who are on 4-5 year orders) to essentially view you as that same JO that checked on-board, and for you to have those relationships you built as an idiot Ensign that can get professionally murky.
Just my take though.