Yes, because an elephant is a stretch but dinosaurs in Job aren't...;)
A cedar implies very large and thick.
And the verse - if you read it as it is written - does not say it is a cedar, just that it MOVES like a cedar. There is NO COMPARISON of the physical tail to the physical size or scale of the cedar tree! The ONLY comparison there is that the movement of the trunk is like how the cedar tree moves.
Really, the words are pretty plain and straight forward; it MOVES like the cedar tree. It is NOT like a tree in size at all. Trying to make that comparison IS a stretch.
read all of job 40 and 41, to keep it all in context. You will see an elephant is not what is being talked about