I'd wonder if you've ever been stopped by police because you study Japanese or don't eat sugar.
That has nothing to do with feeling like you're with people who are similar to you at all. Nothing. I assume you must be referring to racial profiling, which I'm sure exists in some form for some police, but if you have a racist police officer in your town which is composed mostly of black people, the fact that you are mostly around people of the same race as you doesn't make this any less of a problem. Likewise, if you live in a town composed mostly of white people, that doesn't worsen the effect of racial profiling.
I'm not aware of any statistics on racial profiling. Most people I have seen talk about the matter rely on anecdotal evidence, which just doesn't cut the mustard. There could be all sorts of reasons for a police officer to stop you, such as bad driving (which could tip them off to drunk driving), speeding, or a broken tail light. It's hard to see who's driving a vehicle, so if anything, I would expect police to disproportionately pull over cars that are in rough shape, not cars that are being driven by black people. If that were the case, that would mean that they are conducting wealth profiling, not racial profiling.
Your skin and gender are more inherent to you than your habits, and affect your experiences and way of thinking much more.
Saying that your skin affects your way of thinking is literally a racist statement, and I would disagree with that completely. As for your gender, I tend to agree that men and women are different, and this makes sense (we have physical sexual dimorphism, so why not mental?). It still has nothing to do with "privilege". Being the same as everyone else is not a privilege.
There's no doubt that Japanese 'see' foreigners and notice them in a way they don't notice Japanese.
Obviously. If you notice that someone is different from you, you're going to take interest. People take interest in the fact that I bike to work even in the Winter all the time. They also take interest in something about me which is more inherent if they notice (usually children; they're adorably naïve and observant). That thing is something I don't want to talk about, so I don't. If someone asks me a direct question about it, I'll answer honestly and change the topic, or indicate that it's not a topic I care about. It's really not that hard. You can do that with your skin color, too.
Once again, last week I was a complemented by a co-worker of three years, about my great chopstick skills.
If you don't want to be complimented, act like an angry jerk every time someone does so, and I guarantee the compliments will stop. Mostly because everyone you know will stop liking you, but hey, if that's what you're after...
I acutely know I'm white a lot more for having lived in Japan than if I'd stayed in Canada.
I'm acutely aware of things about myself, too. Lack of awareness is not a privilege.
It comes out simply leaving the subway when a person handing out flyers lowers their hand because they see know point in handing a foreigner one.
You mean you're not approached by solicitors? That sounds like a privilege to me. I'm sure if you approached them and asked them what they're selling or what they're telling people, most of them would gladly tell you.
I also draw cartoons, but don't tend to get special treatment for it on a daily basis, as with your list of uncommon traits.
First, someone has to be aware about it. Unless you have "I draw cartoons" tattooed on your face in Japanese, most people you meet probably don't know that you draw cartoons. Then again, if you did have that tattoo, more people would be curious about why you felt the need to put the name of your job or hobby on your face as a tattoo. But I digress.
white is not merely the default of the culture the way much of America considers it. That's a deliberate decision by the gatekeepers of American culture.
"White" is not a "culture". It's a skin color. I guarantee you that I am far more culturally similar to the black people here where I live than the white people who live in France. And no, whiteness was not ever a "deliberate decision". The United States is predominantly white because the vast majority of the native populations prior to colonialism were wiped out by diseases such as Smallpox before European settlers really set foot. White skin itself evolved in Europe to adapt to limited amounts of sunlight, since lighter skin makes it easier to synthesize Vitamin D from ultraviolet radiation at the cost of reduced protection from excess ultraviolet radiation. All circumstantial.