There is something very wrong with the French part (so I'm assuming with the rest too)
- There are 321M native French speakers, not 75M
- Some of the countries cited are not countries but extra territorial French regions
Another weird consideration is that they total to 7B people. A lot of people have several native languages
Some of the missing are left out languages. E.g. there are ~200 million speakers of turkic languages, but they only cited Turkish with ~71 million. Amd they didn't include a single Bantu language. There must be more than 300 million Bantu speakers.
It is also kind of weird that they give numbers to the tenth part while using wild estimates. Turkey has 85 million inhabitants and up to 10 million native speakers outside of turkey. There are no official ethnicity numbers from turkey as ethnicity is not registered. Also no one knows how many turkish speakers exactly live outside of turkey. But they give us numbers to the tenth part? The situation will be similar for the other languages.
Why are Russia, Central Asia, Mongolia, and the Caucasus "Asia Major", and East Asia and South Asia "Asia Minor"? I also think it's weird they split Eastern and Western Europe since Germany and Bulgaria (EDIT: and Poland(EDIT2: and Belarus Ukraine, and Latvia, but they're colored orange as if theyre included in "Asia Minor")) are the only countries I see from the region in the circle. Also Iran, Afghanistan and Pakistan being in the "Middle East" seems weird to me.