Silver Slueth, why is it a disgrace. If we look at the position that each holds, their respective responsibilites and career progression.
SO - has the Capt, FO above them, minimum responsibility in that sense.
CSM - is basically the Capt of the FAs. Has to manage a large team to ensure success.
SO - large potential for career progression, normally the start of ones airline career.
CSM - this would be at the other end of their career after years of being a FA.
I look at it like a Pilot/Flying Officer in the airforce flying a C-17 or herc. The WOFF or SGT Loadmaster is probably making 15-20K more then them. But the Loadmaster has been around for a longer career so far, the new pilot is starting their career.