If you count the fuel used to keep planes flying I wouldn't be surprised if the satellites launches actually polluted a lot less. Don't forget that every launch, although surely consuming a lot more fuel than an airplane, brings in orbit 60 satellites, and there have been about 30 of them so far. I you compare these figures to the thousands planes flying every day, it should give a very different perspective.

Please note that I'm against pollution as you, also I am not a Tesla or Musk fan; they make great products, but that doesn't prevent me to think he's an absolute ass.