It may or may not be fruitful to compare cancer to a fetus, but the parallels are there.
Are you serious?

The person behind the slide is not thinking 'here's a chance to promote abortion', they're thinking 'here's an interesting way of looking at cancer'
No, it's a deliberate attempt to cause yet more division between left and right minded people.

Students in a university studying biology do not need a patronising and piss poor analogy for cancer. You can just go right ahead and teach them what cancer actually is, rather than comparing it to something beautiful and essential to the survival of the species.