Unless you work with interns or very junior devs [1], manager deciding whom to give what, also favoring some subset group, giving them interesting tasks and fin

Unless you work with interns or very junior devs [1], manager deciding whom to give what, also favoring some subset group, giving them interesting tasks and financial rewards, while keeping "boring" stuff for the rest of the team lights up quite a few red flags to be honest. You might want to reconsider what management means. [1] - favoritism is not acceptable in this case as well.