As I said, it is in the singular so it's not speaking of multiple people and no-one else was going to crush Satan's head except the Christ.
imo I believe it is a prophecy declaring the outcome of the final battle between the Christ and the Antichrist ie Armageddon where Satan's rule and way of thinking is utterly eliminated from creation (crush his head) and those who willfully rejected Christ (spiritually dead, the bruised heel) are revealed for judgment.
One could think that the way some here try to make you doubt your conclusion?
That what happened with the birth of Jesus?
According to what was stated in Genesis about the woman's seed?
That it was a lucky guess on God's part.
Not omniscience...
And, that it just turned out the way you are saying it did, by chance.
I would not argue with him.
I think he does not have the capacity to think in the direction you are pointing him.
For surely, others here see it plainly, and may wonder what his problem really is.
This we can know:
Jesus had no human father because the fallen nature is transferred by the male.
That is why it says that sin entered the world through ONE MAN. Adam!
Not through the woman.
The perfect solution?
The Holy Spirit provided what we needed to provide what was needed to fertilize the ovum of Mary.