I don't think they are going all-in with the rp. Some having fun with it, some slightly mocking I-RED with it.
But if you want to attach a political faction to it, it would have to be the Practicals. There's an excellent post in the official forum thread about how such incidents which led to this war occurred. That area of the warzone is basically prison rules with all the strong pirate corps running around. W-BR, 4H, et al are all being realists when they know they have to be the biggest, toughest dogs in the yard if The State is to ever gain full control over the disputed systems. The Patriots would want them to concentrate on only Gallente targets, and the Liberals will opt for blue ops with the Gallente to fight the pirates (an act much more reviled in the general militia than shooting neutrals).
But in my opinion, most State Pro pilots likely fall under the dissociated tag. The militia is perfectly fine employing those willing to do their dirty work, so they have no large corporation to answer to when they do something sinister.