I think you're misinterpreting the discussion. My original point was that, insofar as the advantage and disadvantage of Hazō's Trouble are two sides of the same coin, we should consider both when talking about changing his Trouble, rather than just focusing on ditching the negative. Hazō will always be sincere as a character trait, but to the extent that his unfiltered, "painful" sincerity is tied to his readiness to speak before he thinks (which is what the Trouble represents), you can't change one while leaving the other completely untouched. When people change significant parts of themselves, they do not do so in a compartmentalised fashion.
For the second quote, you argued that Akane's sincerity was represented by a much lighter Trouble. I pointed out that it wasn't, because that wasn't the Aspect which was modelling it, and that in practice, her "other side of the coin" was just as bad in its own way. I at no point generalised this to all sincere people ever.