If we're looking at its emissions with all those downstream requirements involved too, the point of comparison would be all the emissions involved in everything that the average American relies on, which is certainly not just 16 tons.
Yes, that seems worthwhile to do - I was just replying to the notion that the direct emissions of the rocket during launch is the limit of emissions. SpaceX is also highly integrated, so I do think the construction and ground operations cost (for everything SpaceX did that would not have happened had this mission not launched) are worthwhile including.
My feeling is that the scale of rocketry isn't large enough that 28k tons of emissions makes a difference vs, say, the much greater number of private helicopter & jet flights (or single-use plastics, or growing & watering crops in a desert, or any of the crazier things we do as a species)
