This is just anti-immigrant sentiment disguised as anti-colonization rhetoric.
That said, I am curious about your thoughts. What if one thinks culture itself is just window dressing and don't care? People who identify as part of an in-group and hate the out-groups are insufferable, and being attached to a regional culture is just a form of that, cultivating hatred for the 'other'.
Admittedly, I dislike the very region of the US I live in and think the culture here is a combination of intellectually vacuous, sexually puritanical/traditionalist, and generally boring nonsense. I view the individuals who attach themselves to my local culture as kind of pathetic. My feelings towards them somewhat mirror Emil Cioran's negative view of his own countrymen. I have no desire to spread this culture, I'd like to escape it: I'm functionally culture-less as one can be.
I've just been chronically too broke to escape. The election has lowered the bar for what I'm willing to put up with in my escape, but unfortunately so have my resources been somewhat lowered, slowing me down.