Yeah but Google doesn't need to certify Anker or whoever to make a charger and there's no on-going agreement to make this charging brick work with my phone. Anker can't just later decide to not work with Samsung devices and suddenly not work. They all just speak USB-PD and it works.
Tesla chargers shouldn't care if the car is a Tesla or Rivian or GM or VW or whatever, if it plugs in and it speaks CCS it should charge.