>to see them reduced to mere objects to serve your bodily lust
That's your problem right there, man. Rather than interpreting sexual depiction of Touhou characters using the (polemically anti-male) concept of sexual objectification, you should interpret depiction of their sexuality as an intergral part of the depiction of their full humanity within the open canon of Touhou fan works.
After all, you do no not seriously headcanon every 2hu as asexual, do you?