Splatoon 3 sold 3.45m during its first 3 days in Japan alone. Global lifetime sales expectations?

[Kakadu18]

Kneetos said:

I've been underpredicting everything Nintendo related since I signed up, and I've been wrong every time.
so I am going to go with a very optimistic 22 million this time.

I want to see this being an underprediction.