First of all, I don't think the contents will be balanced according to the use of primals.

That said, it will most likely make the content easier if you have access to it.

I don't know why it matters much though. It won't make the content a walk in the park and it will most likely be heavily limited in how often you can use it. If it's not exactly too easy to gain access to, either, then it just sounds like a fun way to gain a small advantage in an encounter you're struggling with. It's not like you just fiddle your thumbs and the primal comes down from the heavens saving you.