I specifically stated the Meryton wives and daughters 'scheming' for Darcy- not Caroline Bingley.
My impression of the first paragraph is JA meant an exaggerated statement of mixed irony and truth, rather than a literal truth.
Mrs Bennet is interested in Mr Bingley as a prospective
son-in-law; A single man of large fortune as a fine thing for her girls.
I think one of the reasons Mrs Bennet thinks she has a chance to land Bingley is he has come to live with them- she was rather down when Bingley briefly retuned to London till Lady Lucas assured her Bingley would return with a party of people.
Yet I do not see Mrs Bennet nor any mother in Meryton as 'scheming' for Darcy.
Darcy is a visitor at Netherfield. The Meryton people realize Darcy owns a great estate and a very large income. I think they'd realize he is likely to marry a woman of his own social class. Especially with his aloofness and proud manners !