I would whole-heartedly agree with the question of why each new kit review devolves to a debate about DS tracks.... This is a kit REVIEW - the reviewer offers his/her opinions about the kit, and the rest of us comment to that review and what it discloses about the kit - and should not, IMHO, become some forum for simply flogging the merits or not of the DS itself. But the DS are a feature of the reviewed kit and may contribute to the viewer's decisions regarding purchasing it.
For those, like me, who find the DS tracks to be off-putting on modern high-detail (and increasingly expensive) kits, the inclusion of same in a specific kit is worth knowing about and worth commenting on - in the context of it being a more- or less-liked detail of the kit. It's a feature which may affect a potential buyer. Those who like the DS are equally free (and it's surely appropriate for them to say so) to comment that this is a feature that they like in this kit.
These reviews do exist in a larger milieu beyond the specific kit; Dragon makes many kits. In more-recent times, this company has apparently seen fit to increasingly move to DS tracks in lieu of their very good link "MagicTrack" sets. It's a general decision and a general issue for some of us modelers, and the trend certainly desires us to comment on it in the general even when the review itself is specific. This kit is just one player in a bigger game and context, as it were.
It is salient that the reviewer has ID'd many interesting details of this kit which could certainly make it attractive -zimm on the turret schurzen being one of those for me. The review also ID's those DS tracks - which, speaking only for myself - effectively cancel-out the other attractive features. But each of us has our perspective and should respond accordingly.
Yes, we SHOULD use these review threads to state our opinion about what we just read about the kit, and, it seems fair that those who consider a detail to be a specific case of a general type (DS tracks in THIS kit are a specific case of the increasing appearance of DS in the line) to comment accordingly. It is not, however, of much apparent use to debate whether one can or cannot get one's desired results from DS versus other products, and how, as a general discussion HERE, IMHO. THAT debate does have a place and time - elsewhere, I think - and certainly is of merit. It just doesn't have anything to do with this kit or this review!
Just my opinion, of course, and other's mileage is sure to differ!
Bob