Considering there are grand total of 65 cars available for sale, it's obvious that the company is still testing the waters. There's no reason to do a massive PR push until they are ready and can scale production.
Those 65 cars could easily be >10% of all new S classes available on dealer lots in the two states, the majority of customers order custom made or order special chauffer variants.
Agreed, as I’m familiar as a buyer and with friends who work at MBUSA in dealer inventory.