I thought that simply having a USB PD PPS-enabled charger would be enough, but Google pushed me into its new 45W power charger all the same.
It's funny that companies like Google have stopped giving chargers in the name of being 'environment friendly' but in spite of conforming to USB PD standards, third party chargers can't still charge the Pixel Pro to it's maximum capacity, so you are essentially forced to buy one.
The summary is wrong. The article says 3rd party chargers can't charge the Pixel as fast as Google's proprietary charger. (45 Watts for Google vs 37 Watts for everyone else.)