> that doesn't mean that there are no ideals associated
Of course. There were the free software movement's ideals, and there were the hacker community's customs and culture. OSI's attempts to cast off these ideals did not completely succeed, so there are still ideals associated with "open source".
I think one of the funniest displays of the lack of ideals can be seen in the annotated version of the Open Source Definition where it says the "no discrimination" clause is justified because maximising contributors leads to more efficient development! So, if banning Irish people would not harm development, it would be fine!
With such rubbish conclusions, it's no wonder that even the people who adopted the term hung onto (a version of) the ideals of the free software movement and the hacker community.