I think it's bullocks. Time is not a dimension, it's a name. Stuff doesn't stay the same because it changes, so we say time passes. It's not like you can move back in a dimension.
The past is gone. The future doesn't exist yet. There is no paper with a line on it. There's just 1 point, the present. Does it move? In comparison to what? There is nothing else to move in, so you might as well say it doesn't move.
But I absolutely love time travel in entertainment media.
I love finding the silly paradoxes.