system
Given the following post, respond as if you're commenting on Reddit:
human
[General Scifi] Independence day resurgence. Isn't the Earth still doomed?

The earth still has a mile wide hole going just miles from the core with a whole ocean feeding it. Shouldn't that cause a lot of issues?  
  
Also the mothership had so much mass that it had its own gravity that even affected the shuttle. Shouldn't it entering and leaving earths atmosphere wrecked our ecosystem?   
  
Also the water displaced from that much mass and its gravity effect the tides in such a way that most of the planet wouldn't be habitable for some time?
gpt
Causing a gravitational pull in space, where it would affect ships, is far different than being on Earth. A planet's gravity would trump that ship by many magnitudes. 

And even if they *did* come close to the core (I don't think they did, persnally) it wouldn't have made a dent in the ocean. If this was a hole 1 mile wide, and 1800 miles deep (assuming they drilled through the mantle), you get a volume of 5654 cubic miles of water.

The oceans are 321,000,000 cubic miles of water. So you lose about 0.5% of the water, which cools and solidifies the rock, which collapses in on itself because of gravity, and then no more hole.