Here's the actual graph/data in question. The article is a dense academic snooooooozefest:
https://www.socsc.hku.hk/rhps/global-migration/
Ffs, trying to click on a country and the globe keeps rotating, hahah. When i click on nations, it doesn't tell me the numbers either, there's just these blobby lines :/
Not very usable.
Options -> change projection helps a little bit.