I had re-watched Season 1 not long ago and I ired the intro of Kira (and the way Nana played her) as 100% honest, no holds barred character especially for a woman. She rightfully was leery and angry with everyone - even Barjorian, were they collaborators? Who the F are these Federation guys to come in?? And of course, other than ODO who she respected, everyone had to earn her trust and respect ...

And for Quark, it makes sense also ... he's gone from lamprey under the facsist Cardassians to 'the Federation' who seemed to be 'boy scouts' and 'bureaucrats' - better to be more hostile and aloof ...

You can argue that Naval commanders of today refer to the chain of command by many names ... Pentagon, CentCom, DoD, etc, etc ... depending on where the order came from ...