Ummm. - Aligning the DG to the mag compass and verifying RW heading with the mag compass isn't done anymore?
No, in fact some aircraft aren't even typed with a wet compass.
They do have redundant slaved systems however and in many cases as I believe is the case with the CRJ is an inertial reference system as a third backup.
"Ummm. - Aligning the DG to the mag compass and verifying RW heading with the mag compass isn't done anymore?"
Doesn't look like its 100%.
If they made a rolling takeoff, that is advanced the throttles as they turned onto the runway, the compass would be useless to check. A compass is not accurate when accelerating or decelerating. It will indicate a turn and slightly wrong heading. A compass can only be used in stable flight. Of course, there are other instruments that are not affected by acceleration or deceleration that can be used to check the heading of the aircraft. However I just wanted to point out that a compass is not accurate in these conditions. This question is asked in many variations in every private pilot check ride and written test.