IMO, 18s and20s are the 16s and 17s of 15-20 years ago.
I've had the 20s you pictured on my 07 Ram for a couple years now. No issues. OE tires have hauled my camper x country and back. 80mph freeways and forest roads.
Have run em on the beach and thru 2' or snow as well. (Not the tires, those tires are horrible in the snow)
Unless you are ordering a truck take what you can get. All the 4th gen takeoff wheels are plentiful and a lot of them for sale on CL. You can keep or swap them. With little effort and probably no $ out of pocket if you don't want them.
The only difference you may notice vs smaller rims is slightly more stable loaded up due to the shorter sidewalls.
The only thing I don't like about them is the plastic inserts which are kind of cheap but they come off easily and leave a decent looking wheel behind if you do destroy and remove them.