If the Cube had of got to Earth they might not have been much safer there.
No one on Earth died during that engagement. Nearly everyone on a Starship did.
The cube didn't reach Earth there, we've seen examples of the Borg harming people who weren't aboard starships.
Two Federation outposts in sector three zero have been destroyed,
there's been no communication with Federation starbases in sector three one ...
That's from The Neutral Zone.
The New Providence colony had 900 people.