That profile can and will be used however Google wants' to use it.
Remember, Google's (the company's) only reason for existence is to make a profit, and ALL their revenues come from Advertising - 96 percent.
That's a hell of an incentive to know as much about you as possible, and use that against you to violate your privacy and abuse your eyeballs (sorry for the semantics, I know).
Computers don't have prejudices, don't have a motive, and work on the specific task without being sidetracked by feelings.
1) If the programmer is good the computer COULD show prejudices. It's not an implication. I can be a racist bigot, but if I'm a good programmer I will not prevent login for the users 晴輝, Abd al-Aziz or 湘. I can build a watermill and it will not have prejudice, it will just do a job.
2) The programs running in such big companies are peer reviewed, so the inner workings are known and checked by at least two people. You cannot do that to human beings. You don't know what they are ultimately trying to do AND you cannot have at least two people checking on them. If now you're thinking of parents, remember that they have a limited influence on a person.
3) Random prejudice could still work, just like random noise, but I still disagree on the prejudice part.
However, if you were a programmer with a very insular mindset, you could create a system without support for such non English names, by not even considering that non English users would use the service. Just an example of a prejudice that could show though.
It is more an example of random prejudice introduced by a programmer. In that case I retract some of my points.