Let's say you get the battery out by unbolting it in a short amount of time. You'd have to let it drop onto something to then remove it from the car. In one video a person used 2x4s then pulled it out with another vehicle.
Now what? How do you get it into another vehicle to transport? There's no place for a small crane to attach to. You would need some sort of hydraulic lift that would be similar to a pallet jack. Once it's up you then need to move it onto the truck which would be difficult.
Maybe you can drag it on the back of a truck using a pickup bed mounted winch.
Finally what do you do with it? It's nearly impossible to remove the individual cells, they are incased in some sort of protective foam that you have to chisel out. Sell the entire thing? Tesla will know the battery is stolen, car reads the serial number, bam, back to you.
Not to mention how large it is, how many could you do in one night?
More importantly why did you make your post? Do you have EVs so much that anytime even a slight advantage comes along you have to dispute it? Maybe you just like to argue. It's just really weird.