The hiring manager was emphatic, "Anyone who is too lazy to write a great cover letter is not worth considering." But as he said that, he and I both knew other hiring managers in his organization who never even glanced at cover letters. Were they too lazy to read them?
It seems that, like beauty, Lazy Is In the Eye of the Beholder.
Some very common candidate behavior is considered rude by some hiring managers. And some very common hiring manager behavior is considered rude by job seekers.