Interesting article; what is ridiculous about the US is that some pilot groups actually think they're better than others, because of the finiancial condition of their company (which pilots OBVIOUSLY have nothing to do with). I believe the root cause of seniority lists and pilot refusals to impluiment change is because they have a sense of entitlement and don't wish for more experienced, more qualified pilots to displace them if an airline shuts down/merges.
So, in short, its selfish egotism and belligerence over something you feel is yours. A shame.