My '19 JLR is the same as yours. https://www.jlwranglerforums.com/forum/showcase/biscuit.1163/
Click the build link on my profile or https://www.jlwranglerforums.com/forum/threads/2021-jl-on-42s.70218/If that's muddy I assume your building a mall crawler?
Dealer "detailers" are trash. Its a bucket boy with a dirt rag, damp towel and shop broom. Scrubbing swirls and scratches into your brand new paint.My Sahara 4xE looked worse than that with only 6 miles on the odometer. I gave it a proper detail top to bottom at home because my own experience is dealer detailers can cause more damage than do good.
Looks pretty normal. I read somewhere that the storage lot where the line them up for transport next to the plant is dirt, so if it were raining the day......Having read many of the posts here I asked the dealer to not let anyone test drive it. He sent me this image as soon as it arrived at the dealership. Doesn't it look like it's been off road in at least water? Maybe that's normal. Lots of dust, must have been from the train ride. Dishman Dodge in Spokane gave me a great deal. See https://www.jlwranglerforums.com/forum/threads/2021-jl-on-42s.70218/ for the build plan