In think they just mean "on-chip/integrated DAC peripheral" when they say DAC (which is what a lot of hobbyists/non EE folk think of from the term). The article

In think they just mean "on-chip/integrated DAC peripheral" when they say DAC (which is what a lot of hobbyists/non EE folk think of from the term). The article's just trying to say you don't need one for an audio use case and can use a discreet RC.