While it would be more accurate to say that it contains “only figures that conform to female body stereotypes” rather than “only women”, to the extent the latter is an issue of any kind, the former is an issue of the same general class (in fact, I don't think the people complaining about the former would actually be concerned at all if it was the former but not the latter); further, in the case of images where he individuals aren't known to the speaker, the only way the latter can sensibly be interpreted is as a reference to the former, so the objection itself seems to me to be rather context-blind pointless pedantic distraction from any substance.

Thanks, I'll try to be mindful when I'm stereotyping and joking about upset gender people and remember this to improve the quality of the joke the next time!