The main issue is that it partially reassigns blame onto the recipient of the apology. As if you’re saying “I could have done better, but if you were someone else it might not have been an issue in the first place”.
Keep in mind that most apologies are being given unto hurt people and hurt people are less likely to give you the benefit of the doubt. That’s why rule #1 is to keep it simple and spare the details.
EDIT:
A good example of this in context: “I’m sorry for this mixup. It should’ve been written better.”
Making the object of the sentence explicit (“this mixup”) removes the implied presence of the recipient (“I’m sorry for not being more clear (with you)”).
The main issue is that it partially reassigns blame onto the recipient of the apology. As if you’re saying “I could have done better, but if you were someone else it might not have been an issue in the first place”.
Keep in mind that most apologies are being given unto hurt people and hurt people are less likely to give you the benefit of the doubt. That’s why rule #1 is to keep it simple and spare the details.
EDIT: A good example of this in context: “I’m sorry for this mixup. It should’ve been written better.”
Making the object of the sentence explicit (“this mixup”) removes the implied presence of the recipient (“I’m sorry for not being more clear (with you)”).