Oh, I understand that rudeness isn't something that bothers everyone. I just pointed out that some people are bothered by it. For me, it depends. When rudeness it domes with smug (I'm better than you) attitude and in a situation where I am a customer of sorts, I can just go somewhere else.
As for your reason for leaving Kano Pool, I can't blame you. Something seems to be wrong with it. I don't pretend to know what is wrong, but I find it highly improbable that "luck" is to blame. If Bitcoin mining had a version of "Selling Short," I'd be all over Kano Pool!
IMHO is not rudness, more like um, kicking someone into perhaps learning more about mining and what is involved in it. With so many of the same queries over and over generally dealing with payments, 5n and, PPLNS - all which are explained as clearly as possible on the site - well one gets testy.
I myself am rather known as short and to-the -point generally because a very simple Google search will give better answers to a lot of general mining questions not to mention rather specific ones such as dealing with AC power, cooling, etc.. Ya know, the whole 'Give a person a fish, teach a person to fish' thing. I do it to prod them into not just getting one answer but hopefully to also learn some of the 'why' behind it.
Mining does involve a modicum of know-how in various things and mining basics are well covered on numerous sites/youtubes etc. You are making a sizeable investment so read/watch all you can about mining -- the info is out there!