There were 20-30 held up for a long time (approaching 2 weeks) in October with Equipment List but no Window Sticker. Mine was one of the group. I pulled the build sheets to try to determine the most likely common denominator which was TTPMS sensors. They all broke free at once so the assumption was a shipment of sensors had made it thru the shipping fiasco.
This is just an example of what can hold truck in JS without Window Sticker. Other auxiliary parts such as TowMode Cameras, Trailer SurroundView Systems, Floor Mats, or 5th Wheel hitches - or items such as Blind Spot Monitoring, Power Folding Mirrors, or Sunroofs - or secondary vendor issues such as Bed Liner or Gooseneck Prep could also delay a truck. The TTPMS was only one of many examples that have been suggested as holdups.
And as far as telling them to remove an item that is holding up a truck - that certainly sounds like a practical solution until you think about the logistics of (1) identifying item or items holding up truck, (2) Checking Supply Chain for part / parts to see if any are in route and when expected, (3) contacting dealer, (4) dealer contacting buyer, (5) getting OK or not, (6) getting info back from Dealer to Manufacturer, (7) adjusting build paperwork and invoice, (8) pulling truck from storage and making any adjustments / completion without an item such as Power Folding Mirrors, (9) shipping VS (1) wait for part, (2) pull back from storage to complete, (3) ship.
Could it be done? Yes - Would it require additional effort on part of Manufacturer already stretched thin as to resources to set up and maintain system? Yes But If YOU were the manufacturer whose business is building trucks, faced with a few - say 10-20 trucks held up, and trying to turn out as many trucks as possible to meet demand in this time of more or less random parts shortages that could come in tomorrow or a month from tomorrow due to unpredictable shipping, which would you do?
We, myself included, tend to look at things from our perspective and expect information like we used to get from Amazon (which is also getting to be unreliable).
Just my 2 cents worth of response.
Best to all - and especially to the hundred and fifty souls who ordered in May-July and dont have Equipment Lists yet.