That's how I interpreted it as well but that doesn't change the fact that he looked goofy, plus with Superman his struggling doesn't really make much sense as there's no rhyme or reason behind his ability to fly nor how he can maneuver, stop, start, hover - we just have to accept that he can. It was much more believable, for example, watching Tony Stark struggling to do so in a suit of armor with an on-board adaptive AI and built-in thrusters, repulsors, flaps, etc..He looks like someone who is learning/struggling to fly but having fun with it.