I had no trouble configuring a Big Horn to be virtually the same as a Laramie. One needs to add the Level 2 Equipment Group at $2,500 and the Premium Lighting Group at $995 and the 5-passenger seating to get bucket seats at $595 ($895 for the Laramie), to get something on par with the Laramie. The only option exclusive to the Laramie are power running boards which I find to be a stupid thing to put on anything other than a motorhome.
Every performance and safety option for the Laramie is available for the Bighorn and I do not consider auto dimming headlights or rain sensing wipers safety features but conveniences. I have not trouble dimming the headlights or turning on the windshield wipers myself.
For a 2021 Laramie I would be paying $5,540 more than for a comparatively very well equipped Bighorn and I would have nothing to show for the extra money spent. In terms of what I would end up paying a dealer the diffence is probably more like $3,500 but that is still money I would rather put elsewhere.