Egoraptor needs to learn him some damn Theory of Relatively. The fuck is he talking about time is not a spacial dimension. Time is Space! That's why it's called spacetime!
He didn't say that time isn't a 4th dimension, just that it's not a spatial dimension, and he's right. We don't describe an object 'size' with time, though an object's apparent size can be altered due to relativistic effects.