That's like saying that all that matters is that the operation was performed properly, and that this is all that matters - even though the patient died. There is not such thing as an "argument itself." Everything that is said and heard is said and heard within some context, some framework of ideas, intentions and actions, and derives its meaning from there. Well, this is some patronizing there! "People must not be told the truth, because they can't handle the truth. At most, the truth should be given to them in very small bits." The issue is that philosophical arguments don't have full convincing power on humans. We often wish they would, we wish that simply by working out an argument, we will believe the conclusion - but it doesn't work like that. At least intuitively, we know that neither our empirical, nor our philosophical efforts can give us the certainty we so seek. It takes some maturity to be aware of this and live with it. The idea that truth is usually something uncomfortable - that is just so Abrahamic! Such an act of bad faith.