I don't think you fully understand the topic. My first post was about Sonoma not changing wallpaper at all. But as you have found, Sonoma does display the Apple wallpapers correctly once they have been downloaded and that seems to be what you are responding to. However, Sonoma will NOT shuffle an album of your own images from Photos as wallpaper. Have a look at my post from 26 September with an image attached. To make it clearer I have attached a screen shot from Settings. You'll see that Wallpaper is set to shuffle an album from my Photos library called Funghi. And on the desktop behind it you can see the Sonoma Vineyard wall paper. Try it.
If you want your posts to be treated with respect, treat others with respect. Describing others' legitimate posts as "griping" will not earn you a positive reaction in these discussions.