This image is implying that women are objects to be bought and sold and "controlled". Thus the currency. That's why it's offensive. Women are not "objects" to be controlled or bought. It has nothing to do with solidarity.
Also, your example talks about "making fun of" someone. The image in the OOP example is reducing a woman's personhood to nothing but that of an object. It is intended to mock her existence and imply that she has no personal agency beyond what a man would choose to control her with.
Also, your example talks about "making fun of" someone. The image in the OOP example is reducing a woman's personhood to nothing but that of an object. It is intended to mock her existence and imply that she has no personal agency beyond what a man would choose to control her with.