Super Saiyan Blue's mechanics in Resurrection F & Dragon Ball Super's manga continuity don't need to follow each other's rules. As I just wrote (

), they're separate continuities. Toyotaro's story is consistent within itself & the drawback of Super Saiyan Blue
only activates if one switches the transformation on-and-off in a short period of time. It's as powerful as it's intended to be when used normally.
Super Saiyan God doesn't fade away in Toyotaro's story. Again, this is consistent within itself. Yes, Battle of Gods had Super Saiyan God wear out with Goku absorbing the power. Yes, in support to his Battle of Gods
film, Toriyama claimed it wasn't necessary anymore to start the ritual (I've italicized where the film segment is quoted below). That's not how it's portrayed in the manga continuity & one shouldn't expect a 1:1 adaption either. It needs to stand out in its promotional magazine. Super Saiyan God is treated as a standard transformation for the entirety of Goku's battle with Beerus in the manga continuity. Toyotaro is encouraged to determine his own spin like the anime staff is.
Akira Toriyama-[i]sensei[/i] Godly Interview wrote:Will Goku be able to transform into [Super Saiyan] God in the future?
I think you'll understand if you watch [the movie], but Goku has already absorbed [Super Saiyan] God's power and made it his own, so
there is no need for him to transform into [Super Saiyan] God. Goku basically only thinks of fighting as a sporting match, so borrowing the power of five people isn't fair, and he resisted doing that; however, it seems his curiosity towards the realm that lay even further beyond him won out.
Tori-Toyo Interview wrote:Speaking of the manga, I want to ask you two about how you put the manga together. I hear Toriyama-sensei checks the storyboards for each chapter.
Toriyama:
That's right.
Toyotarō:
Since Chapter 1 I've used Toriyama-sensei's plot as a basis, but have been allowed to expand on it.
Toriyama:
It's better that way.
Super Saiyan God being exclusive to a ritual remains true in Battle of Gods & Dragon Ball Super's anime continuity. Guidelines weren't broken when Toyotaro's story handled the process differently. His usage of the transformation is cited as strange in-universe, too. Attention is called towards it when it's used against Hit & Future Trunks. It's deliberately called out in its script. You're misquoting him, too. He claims to never deviate from the
main plotlines but that doesn't stop him from
expanding the ideas presented on the outline he uses. The "truth" you're referring to
has been shared with the public: Toriyama is only particular about certain details. He deliberately allows the anime & manga continuities to be creative with his story. Nobody is asking specific questions because the purpose of his vagueness is intended to allow others to craft their own interpretations freely. There's artistic pride encouraged through those implications.
Interview: Dragon Ball Super's Toyotarou wrote:It sounds like you have a pretty close working relationship with Akira Toriyama. He gives you the outline and you make changes. What is the most interesting thing about working with him?
Every month, I'll create a storyboard for him to review, and then he'll give me input and suggest changes. When I'm working with Toriyama,
there are many portions he gives me props for coming up with, but he is very particular about other things and always points them out for me to correct. And when he corrects me, I think “Wow, I guess I don't completely understand the way he looks at things,” so his corrections and feedback are incredibly accurate and helpful. It's a lot of fun to be able to get closer to his way of thinking.
What surprised you the most about working with him?
First of all, to be honest, I'm surprised that he's okay with someone like me carrying on his work! The other thing…I thought Toriyama would be more particular about the story, but
he's actually more particular about the gags and the comedic moments! I can tell that he really loves those parts.
There's nothing wrong with that. We're free to question the execution of each continuity presented to us. But there's nothing inherently wrong with how the storytelling production is being handled. That's the purpose of this experiment: creating their own tale. I find it odd that we discuss an outline we're not allowed to see so much. No one here knows what it says! A fair comparison to characters that aren't public cannot be executed & I think it shouldn't be worried about at all. The audience is meant to consume what's put out there.

I feel as if your criticisms are misplaced. They can be valid, don't misunderstand, but I think you're misapplying your energy towards the wrong elements. You're expecting something that wasn't advertised to begin with. Judge the manga continuity by what it's establishing within itself instead of what's established in Toriyama's films & Dragon Ball Super's anime continuity. You'll free yourself of thinking somebody did "something wrong" that way.
