This strikes me as very misleading at best. Maricopa is not giving the routers to Cyber Ninjas or the AZ Senate. The settlement is for an independent special master to hire 1-3 tech experts to review the routers/logs and answer questions from the AZ Senate. The AZ Senate in return will write a letter to AG Brnovich stating that Maricopa has "fully complied" with the subpoenas.

The settlement is here: Maricopa Agreement

This does not say that "Cyber Ninjas has full access." In fact, it sounds like Cyber Ninjas has zero access to the routers.