I can understand your frustrations. Many of us have the same feelings.
I'm sure some group at Apple decided "Genre" was a useful way to categorize music, it's even a traditional way. But it is also rather subjective, unlike the 'either/or', 'yes/no', 'on/off', '1 or zero' way computers work. I assume that group threw all the 'genres' they could think of in a bucket and then took out 19 (a randomly created number, no doubt) and stuck them into iTunes. 
You must remember, despite our Supreme Court rulings to the contrary, that Apple (a Corporation) is not a human, even if it has the right of "free speech". Nor will it ever be confused as a perfect 'person'. Sometimes I think a Corporation becomes a combination of all the worst traits of its management. 
BTW, "Stereotyping" is one of the fastest growing pastimes in the World! It makes everything so simple! It has made life binary, just like a computer! We all know that computers never fail.
We all know that computers never fail.We all know that... never...
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do I really need to watch US TV?
Most of what I watch originally comes from the BBC via our Public Television network. Another large segment of shows are actually filmed and produced in Canada; DIY, HGTV and FYI channels. Those are mostly produced by <Scripps Networks, LLC> with headquarters in my State. The same company also produces a couple of food/cooking channels. Note, I'm talking about channels, not just a program(me) or two!
I can only hope that you don't come across any "Honey Boo Boo" shows.
Here's the least obscene and repulsive site I can find that explains that show. <Wikipedia page> It's really not worth the bits to even visit that page!
... do I really need to watch US TV?
No.
As Jim said, most of the good stuff (PBS) is either from the UK or is based on programs that originated there. There are a few decent shows with US roots but you have to dig deeply to find them or choose self-help channels, that is unless you are a fan of crime and depravity.