Station-specific issues.
BMX is trying to restore some male sex appeal for its female target audience. The male jox on the station are rapidly aging out of the demo. They know that Siegel is the only one who can pull off the old and un-hip routine. Aging jox don't fit with the station's imaging. Just ask Joe Martelle or John Lander or Joe Cortese.
At ODS, CBS decided a woman can't carry the morning show and brought in a journeyman, gave him top billing and has him doing the elements while the woman does the "fun" contests, like trying to name a town by rattling off the names of bars.