Something I challenge you to think about, just because something is not “stated in the manual” and like jimmy said, is a technical detail that is implied here doesn’t mean the truck does not utilize adaptive steering. It also has absolutely nothing to do with a salesperson as referenced above, if you understood how product planning and engineering worked within an automotive oem, you would know the folks that update and tech/fact check the owners manuals are unfortunately at times the last to know of product changes and or updates. FCA product planing and engineers knew these trucks would have adaptive steering implemented long before any salesperson could even begin to think about what or how it affected the HD truck platform. Also a little technical FYI, the adaptive/electro hydraulic steering is “adjustable” on these trucks, just not via the typical user/driver interface within the truck. The aforementioned being a very similar situation to the owners manual not containing all of the detailed information on the system.
Either way at the end of day, the system / feature is great and a true improvement over how these trucks used to drive. If you don’t want the auto lane corrections happening simply turn lanesense off and you will still have your adaptive/electro hydraulic steering to use as you please.