This assessment of the Sport is fine as far as it goes, with the benefit of hindsight and 20/20 vision.
But it fails to take into account the special place the Sport occupies in the history of FT shooting, or the affection in which it's held by many airgunners, myself included, who have owned one since the early '80s. The top quality of the cylinder, the barrel, the finishing of the metalwork, the fact that it was the only sporter produced by one of the most successful match airgun manufacturers ever, all make its flaws tolerable.
Yes, they may not compare well against some air rifles made since, or even perhaps at the same time, but they have a character that endears them to collectors in a way that other rifles just don't.