Good sir, with respect I must disagree. No matter the mistakes designers may have made in the past, it simply has no connection with the civility of posters on a 3rd party site such this, excellent EN World. We posters are responsible for our own behavior. The current designers may call 4e "rubbish and trash of the worst sort, played only by moral reprobates and sexual degenerates", and while as a humble player I may strongly disagree, it does not follow that I am then given carte blanche to be uncivil on Master Morrissey's fine fora.
For myself, I expect the designers of 5e to say nothing but negative things about 4e for the next three to four years. At worst, they will do so for purposes of marketing, to differentiate the new edition from the current, and to appeal to the untapped markets. At best, they will do so in good faith as they explain what changes they are making -- it will follow naturally that in the course of improving on 4e they must lay bare its faults. (Of which there are a few, I say as an ardent admirer and player of the game.) I have thus resolved that no matter what they may say of the game, I will, primarily, not read into statements about the game implications about its players, and, secondarily, I will not take criticism of my preferred edition personally.
In some of my opinions, I am as constant as the North Star, and I have found that at times these opinions find themselves in opposition to those of good master JamesonCourage. In our (too few) interactions, I have failed to move him from his positions, and I must confess he has been no more successful in displacing me from mine. And yet, I feel our exchanges to have been ultimately profitable, and it has been my pleasure to receive Experience Points from the good man, even in the midst of disagreement. I humbly suggest we all follow his fine example, and that even in the heat of spirited debate, we give Experience Points not only to those with whom we agree, but also the well-written and civil arguments of the opposition.