You are talking different routes here. Dylan can't use his new training/confidence to put a stop to Aiden's blackmail instead of the twist if on the boarding school route he never gets the new training.
There would certainly be an amount of suspension of disbelief for Dylan to even slightly come back from a mistake like the twist. But considering that Sophia only ever finds out about the twist on the boarding school route, where Sophia/Dylan is locked out, we already know that he never fully pays recompense for it, and that Sophia's respect for Dylan never fully recovers. And it makes almost no actual difference if Sophia doesn't ultimately have the best opinion on Dylan, since to choose the boarding school route, you've already decided you're either going for Amber/Dylan instead of Sophia/Dylan, or like me, not on the Dylan route at all anyway.
But that's the boarding school route which is separate. On the Aiden's tasks route, the twist is irrelevant since Sophia never finds out, with Sophia/Dylan carrying on as normal so that those shippers can get what they want.
And there's a certain amount of suspension of disbelief that happens in all fiction, it just happens to be up to the individual reader what they're willing to accept. One of the reasons I don't play the Dylan or Sam routes is that I can't reconcile Sophia allowing Dylan and Sam to make technical fouls in the basketball game in the driveway. Especially when they're attempting to not to subtly grope her. And the fact that she's a sports teacher, so she sure as hell knows the rules. But that's my own opinion. Obviously differs from those playing either Dylan or Sam routes.
The rules to basketball, that's the thing that was a bridge too far? Not Dylan's teacher's blackmail? Or the movers making advances on Ellie in front of Sophia? What about Dylan not knowing how to swim, or grabbing Sophia's butt on the swing?
Nope, the thing that pushed you too far was the rules to basketball? "Hey, I can live with all this other stuff, but that's clearly a personal foul! Sophia should get two free throws, possession of the ball, and Sam should be ejected from the game. L&P doesn't know the rules to basketball, this breaks my immersion."
I'm teasing you in good fun. That definitely is not the reason I expected.
And you're right, I was mixing the two scenarios but:
1) I'm under the impression that the twist existed in both scenarios, we just hadn't heard about it yet if you accepted Aiden's tasks. Now that it has been removed from the boarding school scenario it doesn't exist in either scenario. But that may actually make it easier for Dylan to have a redemption arc because now he really could use his training to confront the bully.
2) Whether or not you're on the Sophia/Dylan path or not, the Dylan twist is so severe that it isn't unimportant. Like him or not, Dylan is a major character in this game. I'd hate to have a major character that was so tarnished by the twist that he could never be redeemed. I think it's important, whether or not you're romancing Dylan, that he as a character gets the chance to turn it around- and that wasn't possible as long as the twist existed.
I also have had this thought about Dylan and his training to sort out Aiden but thought it was a bit too obvious solution for this and thought that Dylans training would be used for something else.
There are two chances to finish the Aiden blackmail one on day 20 playable day 13(the most comfortable solution)so I don't think Dylan will be involved in this one.The 2nd solution will be on day 25 playable 18 so Dylan could play a part in this but my personal opinion is Dylan will not be involved.
You have a point- but irregardless it was just an example. There needs to be something that Dylan does that he can show growth from. Maybe the training is too obvious, but at some point he as a character does need to show some growth and the Aiden storyline seems like the obvious place for it to happen.