Tyson is not a journalist - https://en.wikipedia.org/wiki/Neil_deGrasse_Tyson
His description of earth as pear shaped is not unique to him, he did not invent the concept and it is one of the most widely mis-understood comments ever made. He simply meant Earth is not a perfect sphere, which it isn't - this has been known for many many years.
Widely misunderstood, is it?
He seems to be pretty clear on what he's saying, regardless of the awake people knowing it's bullshit.
Can you tell us why air has pressure?
Air has pressure due to the stacking from the ground , up.
As Earth solid decay it creates gases, basically.
As those gases expand and push against the more dense matter they are in, they are squeezed back and are pushed UP and OUT by force of numbers of molecules of less expanded matter.
To give you a visual, it's like pouring sand onto polystyrene balls in a tub and shaking it to see that the smaller, more dense sand has tried to crush the polystyrene balls, only the polystyrene balls get pushed UP rather than being crushed.
This is happening in all forms and in all types of matter until a stack is formed.
The stack of liquids and solids is already under us and aside us but the gases are stacked up from us and create a pressure upon us as the stack builds.
The stack always has a skin on it as it builds.
Think of it like the skin on custard and imagine filling that custard bowl from underneath to stretch that skin, only for that skin to get thinner until it settles and reforms a thicker skin.
This is a similar thing, except the skin would be the last elements in the stack under the least pressure forming a skin against a true vacuum, as far as we can think of a true vacuum being.
That skin would be ice to our minds, only the ice would be hydrogen/helium, etc kind of ice that is in a constant state of stretching and deforming as the energy of Earth's suns' reflection moves over it and changing the pressure build and thus, changing the size of the dome that houses all that pressure.
Think of it like a huge bubble with a huge hand over it pushing down on it slightly and releasing slowly, then slowly pushing down again, as if it was breathing.
As this happens, you will see waters ebb and flo and also pressure changes as we see and feel them.
So simple and yet shrugged off in favour of a nonsense gravity that cannot be explained.