As you said, it is an in character explanation, but not of the mechanics. The way I see it, Beryl is potentially jumping to conclusions here, based on a too limited data set. As far as I can tell from the quote, this has happened before, but only once, as part of Metallia's backstory. If it has happened other times, apart from Metallia and Carrot, then that is another story entirely, but as it is, Beryl only knows of this happening once before, and in that single case, Metallia, the interdimensional traveler grew to god-tier. That is what I meant when I said that a single instance does not make a pattern, as Beryl is assuming from the single instance that she knows of regarding dimensional travel, that there is a pattern of those that traveled gaining some amount of power because of it. Beryl and Metallia are fallible sources though, especially as they have been sealed away for the last 10,000 years. Maybe interdimentional travel actually happens all the time, but the odds of it causing any sort of power is one in a million, and Metallia (and possibly Carrot) just got lucky, but Metallia doesn't know about any of those cases, and assumes what happened to her is the norm.
With a situation like this, I would require either multiple statements from at least three different, unconnected characters with reasonable authority all stating that traveling gives power (A combination of Metallia, Queen Serenity's ghost, and a researcher in one of the Marvel expy labs all stating that it give you powers, independently of each other would be acceptable.), a single, truly authoritative source that could basically be assumed to be flat out exposition on the mechanics (Records on the topic in the Mercury Computer, for example), at least three cases of interdimensional travel blatantly granting powers, besides Carrot (either new inserts show up, and start manifesting, or mention of this having happened multiple times in the past is made.), or a scene in which the narration clearly implies that powers were added in the transition between dimensions (this would likely have been part of the actual transition scene, and we are way past that point now.)
I think this makes enough sense for 5 in the morning. Goodnight.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.
With a situation like this, I would require either multiple statements from at least three different, unconnected characters with reasonable authority all stating that traveling gives power (A combination of Metallia, Queen Serenity's ghost, and a researcher in one of the Marvel expy labs all stating that it give you powers, independently of each other would be acceptable.), a single, truly authoritative source that could basically be assumed to be flat out exposition on the mechanics (Records on the topic in the Mercury Computer, for example), at least three cases of interdimensional travel blatantly granting powers, besides Carrot (either new inserts show up, and start manifesting, or mention of this having happened multiple times in the past is made.), or a scene in which the narration clearly implies that powers were added in the transition between dimensions (this would likely have been part of the actual transition scene, and we are way past that point now.)
I think this makes enough sense for 5 in the morning. Goodnight.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.