I have read a lot of your writing, much more than you've linked here, simply by being active on this site for just over three years. While I don't really think I could say I know you personally, I think I have at least a little bit of context about you, what your interests are, and what you like to talk about. Your comments have been consistently useful and relevant, and I have no complaints there.
But back to the topic: form and content are not a zero-sum game. You can be eloquent and polite while also conveying useful information, as you mention yourself. You can find people who do this, and it's not a big deal if you're trying to do it yourself. Honestly. If you think about it, the reason I'm replying to you (and why I stick around in some threads and leave others) is both the content and the way it's dicussed: I usually stop interacting when people start hurling insults, because it's just exhausting to deal with it for extended periods of time. It's part of the reason why I occasionally leave Reddit frustrated, why I'm not on Twitter, and why I let other people pull information out of Slashdot and 4chan for me. Really, if I can find one person who says something useful but surrounds it with vicious barbs, and another who can say the same thing but without the acid, why wouldn't I want to go with them? If I can only find the latter, perhaps I'm with the wrong people.
And again, I do personally make some concessions for people I truly do think have exceptional content–but again, these are some concessions. Even Linus–who is usually the poster child of the "who cares how you say it?", who is exceedingly bright and talented, and who is basically a "equal opportunity abuser"–could probably tone it down some. When he is right it's just extra verbiage I need to scroll through and ignore, and when he's wrong (and he is for some things) it just makes him sound extra rude.