Are those Amazon boxes really that wasteful? The alternative is probably people driving to various brick-and-mortar stores to buy these things. How much carbo

Are those Amazon boxes really that wasteful? The alternative is probably people driving to various brick-and-mortar stores to buy these things. How much carbon emission was avoided by having these people buy from Amazon and have it all delivered on one truck? Amazon doesn't just sell unnecessary trinkets, they sell everything, including everyday items you'd probably buy at Walmart/Target/the mall/etc.