The funniest thing about these threads is all the people who talk about the designers saying "it's not a big problem," and paraphrasing that to, "The designers say it's perfectly okay."
No, that's not what the designers say or said. They've said, publicly, that it's just not a very good tactic and not used very often, but if that changes they will do something to address it.
That's as close as you can get to explicitly saying, "It's not a tactic we consider in the spirit of the game" without literally saying that.
And that's in public. Talk to them in a more private setting, and they'll probably be more open about it.
It's also odd how it's so difficult for some people to grasp that the entire point of the concept of "poor sportsmanship" is to talk about things that are technically not cheating, yet are both unintended and damaging for a game or sport. "Cheating" and "poor sportsmanship" are not conceptual synonyms any more than "playing by the rules" and "good sportsmanship" are conceptual synonyms.
My theory is that the conflation between cheating and poor sportsmanship is quite deliberate ... "I'm not cheating, therefore it's wrong to express the opinion that my behavior is bad sportsmanship." No, no; that's not necessarily wrong at all.