Yeah, you’re right, Hal.
I do disagree though that Rey explicitly confirming where she learned it from in the scene is useless. What we currently have in the texts is definitely something a more casual viewer could gloss over or be unsure of what exactly it’s referring to. When Rey refers to the texts in the later scene, it ensures that everybody has made the connection from earlier in the film.
I think it ultimately just comes down to how important you think explaining the power to the audience is. Personally I think not very (I wouldn’t mind if you blinked and missed it), but for this edit it’s of course up to Hal to decide.
Her using the power without explanation is not what is troublesome. What is troublesome is the fact that it is a power which completely invalidates Anakin’s entire arc because it is clearly a Jedi power in origin and yet if it had existed when there was the threat of Padme dying from childbirth it never should have been an issue for him to stay on team Jedi.
So, for the conclusion of the Skywalker saga, there needs to be a clear and direct explanation for why this power wasn’t around during the other movies. It being an ancient and obscure ability makes sense. As Anakin tells Palpatine: “I know there are things about the Force they aren’t telling me.” Maybe he was correct about that, and only Jedi Master’s could access the restricted section to read about this power which had since become forbidden in more recent times due to Jedi disillusionment (“Mourn them do not, miss them do not.”)
See, now this power has arguably enhanced the prequels instead of tearing them down. The Jedi’s own dogma brought them down.