I think it can be, though obviously I would not claim that all or even most wolf-whistles (let alone most catcalls) are anything but sexual in nature. But if we’re talking about whistling at a little girl, I would err on assuming the caller has an outdated sense of social norms as opposed to assuming the caller is literally a pedophile.
I approve of your observations on the differences between a human being and a sunset. I also do not claim the right (or overriding desire) to act upon any urges to take or share pictures of random women on the street because I think they are beautiful.
Yikes, thank you.
~Max