One can complain about the press release... or one could go Mack themselves and see what numbers are available.
As for the complaint about payload and range, the reality of a vocational truck is that the payload and the range requirements are user specific. The manufacturer provides the cab and chassis, and rest of the truck is typically upfit to the customers requirements. If it meets the customers requirements, then nothing else matters. All of that, in this case, is dependent on how the end user intends to use the truck, where, and how.
To be blunt, if you look hard enough, the other "first user" of these trucks is Republic services, which is a huge private player in the refuse business.
These trucks that run within a fixed distance every day, with known capacity and frequency requirements, are the perfect target for these efforts if things are ever going to move this way... Once costs are established, operators will likely switch on their own... A perfect example here is nearly all the larger trash haulers here have switched to CNG. The trucks run their route and return to the base every day, and the costs of the fueling infrastructure make sense in this scenario...