I think you missed a factor of 1000 somewhere in there: Each satellite weighs about 1 ton, there are about 10,000 of them. That is 10,000 tons in orbit for the constellation, not 10. Assuming a 5 year decay, that's 10000/5/365 ~= 5 tons / day. Still about 10% of the natural incoming material, but considerably more than your "six hours worth per year".
reply> I think you missed a factor of 1000 somewhere in there... there are about 10,000 of them. That is 10,000 tons in orbit for the constellation, not 10.
replyI did. what. the. hell? Maybe my swiss-cheese brain read the "," in 10,413 as a decimal separator? I guess that's what I get for posting while old. Thanks for the correction and supporting arithmetic.
Though, I still stand by my "please for the love of everything, get to complaining about CO2 because this thing you're complaining about is a damn nothingburger" conclusion. (I am sufficiently aware to notice that that you're not OP, so the "you" in that pseudoquote is not directed at you.)