The solution is (drumroll please...)
Yep, that's it. All those clues for just a measly square. (I guess that's why this puzzle's tagged humor!)
We start by
marking the edges where the loop cannot pass through due to the 0 clues:
we progressively mark off edges coming off of dots where the other three edges (two for a border dot, one for a corner dot) coming off of them are marked as unusable. We continue to do this until we reach a state like this - note the square at R10C16:
And here's the coup de grâce:
It appears that we're able to make a connected loop spanning the entirety of the grid, but actually we can't (!) due to the edge marked with the star below not being usable:
Thus, we are forced to use the square mentioned earlier for our loop, giving us our final solution.