Has 3.5 and how it’s being enforced today made it against the rules to play unsportsmanlike?
The answer to your question has to be yes but the question remained as to what that meant as people were defining it in all sorts of ways including "not playing like me". Mihai went to a lot of trouble and abuse from other players earlier this year to get RN to define their terms. If your question is asking if that is a good thing only time will tell. I suspect the answer is no but then I know that some players might describe me under that heading because I often free haul so perhaps I'm biased. But then there is no unbiased answer to this question.