No, I was saying that a good long-term solution is not helpful in a short term.

Let's suppose that I completely agree with you that politeness is always the best solution. But to reach that level of politeness, a person starting from my position would have to visit therapy, then a social skill course, a presentation skill course, a diplomacy course, and this all would take at least two years. As a good rationalists I immediately join the therapy and book the courses. But how am I going to solve all the situations during those two years?

It does not help me to know that two years later I will have a perfect solution for a situation that is happening now. Therefore, during those two years, I may solve the situations bluntly, when I think it is better than not speaking at all.