Several things.
This is from my own experience, plus my university studies.
Many elements at such a small size can overload an image making it difficult for the mind to separate it in part. Can be confusing for some users.
You have to look for simplicity above all.
For that reason the composition and where you place the elements is important, you must try to place them in different positions to take advantage of the space in a cohorent way.
They dissented in such a way that they left a black onsobra space in the icons in the background.
Another thing that I know by reading and studying this interface, which I published in this forum.
It's that this interface is bigger, consumes more space on screen, so their icons are also bigger to ours and have another space.