Their political positions are not based on any kind of analysis or fundamental principles, but instead shift along with the status quo, which does change over time due to things like technology, even if the overarching deference to the owning class never changes in a capitalist society. These are politics of convenience in a way that communist politics are most definitely not. Maybe it's just semantics, but I would say right wing culture war politics are not arbitrary, but that they are inconistent.

I've noticed this too, and it's funny because the whole basis of the "NPC support current thing" meme is supposed to be that leftists only hold they opinions they do for social acceptance, while you can see examples of chuds adjusting their opinions depending on who they're talking to. The most common one I've seen is how opinions on climate change will range from "it's not real" when with other hogs, to "it might be real but it's not worth worrying about since this happened at other points in earth's history*, and do you really think humans are significant enough to be a factor?" when around non-political types, to "it's real and human activity is a factor but it's too late so why bother" when around people who have the scientific knowledge to understand and have strong opinions on it.

*this argument works on people who aren't knowledgeable or invested in the topic since it's technically true, but records show the magnitude of changes we've seen in the last century usually take place over thousands of years