The citations - including Adam Smith - are correct, but they do refer to private, consumption credit. This is the well-founded usury problem.

It is a very different thing with trade and industry. Business needs credit for working capital. Refer to Book 2, Chapter IV, to understand the necessity of commercial credit:

“The borrower may use it [money lent at interest] either as a capital, or as a stock reserved for immediate consumption. If he uses it as a capital, he employs it in the maintenance of productive labourers, who reproduce the value, with a profit. He can, in this case, both restore the capital, and pay the interest, without alienating or encroaching upon any other source of revenue. If he uses it as a stock reserved for immediate consumption, he acts the part of a prodigal, and dissipates, in the maintenance of the idle, what was destined for the support of the industrious.”