unless I’m misunderstanding this explains It.
First is that Sagemaster isn't a reliable source. He recently advertised a "discount Orbs" scam on his channel. But that's besides the point.
Still, what he says is pretty mich what I said, it only matters if you snipe Red. Chances don't go up or down like that,the game doesn't do that. What happens is that the odds the game tells you are what the game rolls for. Let me use an example:
-The game first rolls for rarity. It does this 5 times.
-It then rolls for a character of each rarity. Color is not a factor.
-The character is already chosen when you see the summoning screen, the color is only a hint of what character it is.
The thing is, when players calculate the odds of getting a 5*, they're assuming the character is rolled at the time you choose the stone. While this is incorrect for the game, it might as well be true for a player who can't see the coding, because to them it can be any unit of that color.
So, for an example, when you pick a Red stone in the Falchion banner, the chance of getting a 5* is higher because there are 4 5* of that color on Focus and none of the others, meaning that if the game ever rolls for a 5* Focus, it's guaranteed to be one of the Falchion users.
This only applies to when you're sniping, however, if you do full pulls it doesn't mean ****