Kiddman, I did not say that Wilson ever said that their old speakers can be harsh and/or fatigue. That story is indeed told by reviewers and dealers. However, what you wrote is only half of the story. Basically, we are told that the Wilson can be harsh at times because they originate from a studio monitor. Consequently, they are so transparent that every peace in the system counts and it can significantly affect their performance. They "only" reflect the quality of the components and of to the material fed to them ...
I do not want to speculate who started this story, but clearly the story has something for everybody, i.e. dealers who want to sell the new models, experience audiophiles who want a "true-to-source" speaker, new audiophiles, and also the Wilson company. I would say that if Wilson did not agree at all with this story they would have done something about it. We all know that the distributors and the dealers are most often told what they should say to their clients -- very few, like Bo1972 here, actually go against the current and recommend 7k speakers over 30k speakers. (Of course, who's to say that Bo1972 does not have an agenda too.) I find this marketing unimaginative because, as you have pointed out, is repeated for very many years now.
Coming back to Sasha, as I have mentioned in my first post here, it can play decent music also with lesser electronics. I am sure that a smooth and decently powerful SS integrated (e.g. Musical Fidelity, Mcintosh, Rowland, Accuphase etc.) can keep a not-so-wealthy Sasha owner happy till he/she can afford more expensive electronics that will max out the performance of Sasha.