Most operators do not retract flaps on the runway. Maybe the should read "most operators in this region". If you were going to configure flaps for an evacuation in a pax plane you would select flaps 40 (more flaps than the typical 30, eg)
I do not know what procedures are in place for freighters in a non-normal landing. If it was me, I would select 40 in case the fwd exits were blocked and I wanted to preserve my fine pink young self with minimal souvenir scars.
That said, the aircraft is on the rwy, the crew are apparently unscathed, the world is rid of another ancient -300. What's not to like?
castigat ridendo mores