she's making fun of her boyfriend for doing things including listening to Mozart, not eating meat, and driving an electric car
Actually, she lists a huge list of effeminate traits (such as her boyfriend wearing makeup), and the tone is more confusion than "making fun of"- especially in light of the line "I wish you would just be real with me"- she's noticing a large number of... signals... being sent and is asking him to be honest. If you were dating someone who had all the traits of Big Gay Al, wouldn't one be compelled to ask the question?
That's kind of the theme running down every song from that album other than "I Kissed a Girl,"
Except, of course, for the ones that aren't about that, which are... pretty much all of them- Certainly that's not the theme running through the fem-rock anthem "Fingerprints", "Thinking of You" is just a dilemma between choosing between two loves, "Hot N Cold" is about marriage, "If You Can Afford Me" is about choosing love over materialism, and "Lost" is about being sad.
And "One of the boys" isn't a "twisted fantasy", it's about her being a tomboy that wants to be pretty.
You've handpicked a couple songs from the entire album and assigned meaning to it, when in reality you're just coming across as really, really angry. Do you go berserk when worse stereotypes like Lady Gaga pop on the radio? Or Sting? His "I'll be watching you" is totally creepy.
Heck, you could pluck 90% of pop from the radio and find that, quite honestly, many songs are just outright demented. How many people sang along to "I want something else", never knowing it's about crystal meth?
This extends to other media as well. Did you know that "Star Wars" (the original trilogy) was an allegory about Vietnam? "Harry Potter" is very much rooted in allegory about Communism (even going so far as to use the name of "Dobby" Walker as one of its protagonists).
Does that mean that only people of particular politics should enjoy this media? Are people rooting for the deaths of allegorical American soldiers when an Ewok smacks a trooper in the head with a rock?
The capacity to realize that music, regardless of what others derive from it (or, in some cases, even what the artist has originally secretly envisioned as its allegory), is what YOU make of it, really makes life much easier sometimes.