It’s not obvious to me that it has any deep significance.
The triangular view is most interesting. And a 20 minute video on this view is at https://youtu.be/uL5wuiy34rs
edit: Or maybe something wrong with the way my browser (brave) is rendering it.
https://startupfortune.com/ai-models-formally-proved-walter-...
https://vplevris.medium.com/eleven-squares-one-tiny-gap-and-... (written just days before the new proof!)
I distinctly remember him concluded with something like "Sphere packing is hard, except in 11 dimenions" or something like that, but when I look at the history, I can't see how he knew that in 1994?
I really don't get it. If you think you've done something cool, why wouldn't you want to talk about it in your own words?
EDIT: I found it a few links down. https://jlevy.github.io/squares/cases/11.html
For more packings (circles in circles, etc) check out this page: https://erich-friedman.github.io/packing/index.html