Honestly, I have zero issues of a game player using ASLSK and never going beyond that. for the resonse I enumerated above:
1. its gets them playing ASL, and lets face it , nearly any full ASL player can enjoy a game of inf only in an ASLSK form. Frankly, a few of the scenarios are quite enjoyable as ASLSK inf only scens. S9 "Ambitious Assault" comes immediately to mind here.
2. It gets people exposed to the ASL genre without having the immediate hurdle of buying an ASLRBv2 at 80+ USD and a Beyond Valor v3 at 80+ USD, assuming they are not out of stock, again. For the cost of an ASLSK1 - at around 25.00 USD +/-. Quite a good way to buy into the game hobby as an introduction.
3. As Paul mentioned, an ASLSK sale still supports MMP, who in turn supports the entire spectrum of the hobby. a no lose situation for every ASLSK module sale, for all of the full ASL rules players.
Where I think the disconnect, if any, occurs, is that full ASl players need to grasp that ASLSK is a completely different game system within the hobby itself, much as Deluxe ASL, much as the old HoB firefights were, and much as an ASL Journal provided HASL is; each having its own set of rules sections that are used only within its own area, it's own modules required to be purchased if one wishes to play it. This means you need to de-program people's mind-hinge that ASL and ASLSK are one and the same being. they are not, never have been, and never will be. They are simply related products within a wide genre of a niche hobby game.
as with all things ,YMMV.