While I partially agree about content gated behind other content being a pain, I can see where some of it comes from. As stated before, some of the mechanics in SCoB and FCoB are harder versions of FCoB mechanics. Therefore, it does make sense that players should encounter it on earlier before pushing it to harder content.

That being said, I don't understand why some of the Extreme Primals are locked out by other Extreme Primals. I don't see how knowing Moggle Mog EX and Levi Ex will prepare you for Ramuh EX and Shiva Ex.