Yes is a pricvate DTH provider, By law, it must carry all LOCAL channels ( IBA 1, IBA3, CH2, Ch10 , Knesset Channel among other locally produced channels). All the other channels are selected by the comapny and must be approved by the Cable & Satellite Council.
The total majority of Israeki arab population does not subscribe to YES or to HOT ( cable) and pick theri Arabic channels from Arabsat and Nilesat satellites, mostly for free. Therfore, here seems to be no reason whatsoever to offer many Arabic language channels, not to mention channels that continuasly broradcast amterial that woul have made them banned by the counil in first place.
As YES is not obliged to offer such channels, I see no reason why the respected reader thinks they ought to provide them to anyone in first place.