Erasure

Why couldn't it be? Why shouldn't there be a section for "people", to serve as motivation for whomever wants to follow their footsteps and work at NASA?

And also, supposedly, only women's info were removed. Did they also remove the bio of men?

It is pretty standard practice. For one, it helps people who read or review your work know who they are dealing with. For another, it helps the general public understand who scientists are. Part of the mission is to make sure that the next generation carries the work on, and by emphasizing the human aspect of the science, young people can actually imagine themselves getting to that point some day.