Where did you get the bold? I saw a month claim not year.Here is all the hard data facts we know:
2020 total hardware 3160k
Switch ~ PS5 + PS4 + XBS + XBO
PS5 slightly ahead of PS4
Xbox Series about the same as Xbox One
Switch up 52.2% YoY
PS4 down 35.3% YoY
XBO down 42.3% YoY
That should be enough to get some better estimates
Edit - Chris posted on Twitter... I found it.
That means Switch sold around 1.55m units... that again go against OP numbers.