My vehicle does not dim the DRLs with the beams on. The brightness of the DRLs is also inoffensive enough that I don't think they're worse than the beams at all. They're also essentially evenly-lit light bars, and not point sources like the beams, which further helps.
Typically the DRL lamps switch off or go to a dimmer setting when the headlights are on.
That omnidirectional nature makes them pure glare at night.