My reading nowadays is that both Lizzie and Darcy suffer equally from pride and prejudice. It is evenly distributed!
When we meet Darcy, he has a complacent, rather empty headed pride which is based entirely on inherited station and wealth. As a result he is complacent, and stuck in a rut of convention. The things he would have to do for himself, like the daily grind of interpersonal relationships he does not really bother with - no dancing, sneery, letting the Bingley sisters make the efforts on his behalf etc. His prejudice towards all others not of his station is easy to see.
Lizzie has holds hard to her pride even with the full knowledge of the shortcomings of her family. She shows not a little pride in her conceit that she would not do what Charlotte Lucas did, and settle in a pragmatic relationship. She is very prejudiced towards Darcy from the get go because she recognizes his acidic nature and snobbism. I think it triggers her, as it is very close indeed to how her father speaks of, and to, her mother.
They are both locked and loaded with P&P, each one challenges both feature in the other, and in so doing, they make each other better. At least imo! 😛
JA is truly an artist. I bloody love that book.