from the article:

  Google introduced a Battery Health Assistance feature on the Pixel 9a earlier this year. This feature gradually drops your phone’s charging speed and battery voltage in the name of battery health. This tool is mandatory on the Pixel 9a but optional on other Pixel phones.

  “This software will adjust the battery’s maximum voltage in stages that start at 200 charge cycles and continue gradually until 1000 charge cycles to help stabilize battery performance and aging,”

N.B. Many Google Pixel 'a' phones (4a, 6a, 7a) have had battery-related issues in the past.

some people dont use phones with battery health in mind, some use them as an expendable burner tool, and expect to be able to run wide open lips to the firehose, until mission utility is complete.