The effect on the fuselage comes from slightly different angular didplacement at the wing root. Pickle fork is not really ment to transfer these resulting loads as the ribs in place are not ment to carry the loads but to bend and not break.
This a secondary load effect and while sometimes problematic not_too_stiff structures carry them. Make everything stiff and one has problems with them. In optimised structures strength and stiffness must both be handled.