I'd argue that it was Star Wars, it's just an aspect that we've very little exposure to and they were essentially unexplored territory with aesthetics of the Starcruiser. Over the course of the franchise we've had very good looks at what civilian life in the Star Wars universe is like. Our glimpses have been largely the dirt poor or working class, and some of the ultra wealthy in the form of Amadala and Mon Mothma and even then it was just where they lived and worked. We never saw any middle or lowr upper class citizens, the ones who would go on a cruise like this in real life. And besides sabaac and pod racing, we've never really seen what people in Star Wars do for fun nor have we see the insides of many civilian vessels either, mainly run down freighters, along with tons of Rebel and Imperial warships and each of those have their own aesthetics so saying that the Starcruiser doesn't look Star Wars enough isn't saying much. It's not Star Wars enough because it doesn't look enough like a Rebel/Republic warship or an ISD on the inside? This is the first time that we've been given a look at a cruise ship in the Star Wars universe, so I'd say that this gave them the freedom to do whatever they wanted and having been on a few cruises in my life, it looked pretty cruise ship like to me, about what I'd expect for a cruise ship in space.
True. But if I went to the Avengers HQ in Disneyland and only saw Squirrel Girl, Howard the Duck, Rawhide Kid and Man-Thing with none of the core legacy superheroes it would be just as off-putting, even though you can make the case that they, too, exist in corners of the MCU that we haven't seen before.
It is possible my tolerance is affected by my disdain for KK's footprints in the franchise. An experience designed to be arrogantly exclusive by being prohibitively expensive with little return seems to embody everything that's gone wrong with SW. The notion that the Captain of the Starcruiser was likely designed to resemble KK herself doesn't make it any better.