I don't love the new homescreen of the default Messages app.
The all-black background doesn't jibe well with all the other homescreens in Samsung native apps which all have a dark gray background in the menu pages.
The text is also waaay too tiny and doesn't match up with the other native apps.
Old vs new. Not a fan!!
I talked about that in a post, there is no uniformity and however in the contacts if there are separation lines and they use dark gray with dark mode...too many basics detail to improve.