No, I do not consider them to be part of the main ASL unless they are available from MMP for separate purchase. Otherwise, you are going to require that longtime players invest $20*4 = $80 in starter kits just to get the boards – with the rest of the material being useless to them.
I should point out that I do not like the starter kit concept at all. I have seen one game system destroyed/fragmented by this idea. I would hate to see ASL go the way of SFB.
Now it is certainly possible that this won’t happen, but the way I have seen the starter kit marketed so far, it seems likely. Of course, it would help if MMP laid out in detail the goal of these products on their website. Simple questions like, “If a person buys all of the starter kits, will they have the equivalent of a RB and other components to play against regular ASL players or will they still have to purchase a RB and modules to get going?” IOW, if a person shells out $80 for the starter kits can they play ASL. If not, then you have two separate game systems.
The original Squad Leader game used the Programmed Instruction method to introduce the rules. However, even though “The Guards Counterattack” could be played with the small subset of the rules introduced in the first 7 pages, it was balanced and playable with then entire set of rules.
From everything I have read so far, the scenarios released in the starter kits have not been tested with the complete set of rules. So, if you are going to design scenarios for these boards, at least you are using the right approach. The real question is “Can you make them interesting?”.