I totally agree. I have a handful of friends that I consider genuinely nice guys - people who everyone respects and are drawn to because they're fun-loving, authentic, and accepting. But they are very clear about their boundaries and will firmly uphold them; they don't tolerate drama or put up with bullshit. Those guys are rare, but they exist.
At a more abstract level, I agree with the pattern of "show not tell". If you are [smart|nice|ethical|moral|successful|beautiful|etc] then you don't need to project that onto the world, the world will judge you by your actions. (This is one of the things that bothers me about politics and politically-passionate people alike - and, in turn, why I enjoy taunting them so much).