It doesn’t explicitly say they can only siphon from others.
And it doesn't explicitly say they cannot fly yet no sane person would infer that this spell makes you capable of flying. The spell does only what it says it does, otherwise you are still bound by all the base rules and limitations of the game, like not being able to willy-nilly siphon life force out of things without a feature that explicitly says you can.
No one says “women soldiers” except maybe a civilian.
And I'm not telling you to, stop putting words in my mouth. Female as an adjective is fine, "female soldier" is fine, calling a group of human women "females", as in a noun, is demeaning and incel lingo.
I'm from a country with mandatory conscription for men, so yes, I've been in the military and I've seen the misogyny (among countless other varieties of bigotry) rampant in that system from front row seats. We had a handful of female volunteer conscripts, as well as one of my NCOs was a woman, and it was blatantly obvious they were not recieving the same treatment as the majority of us who were men (and not in a good way, if there was any room for confusion).
Experiences like that are among the key reasons I'm not happy to see people keep perpetuating that kind of behavior, especially in other traditionally male-centric contexts like the IT industry and even here on this forum.
Not just that, it's also rules as written, Vampiric Touch explicitly states: