The Switch 2 has absolutely been a massive success. But I think this exaggerates that success by only using 4 days worth of data for it. I don't think anyone expects it to maintain nearly 900k units every day for the first month or even the first two weeks. The sales are clearly going to be front loaded for console launches with good supply.
Switch² is killing it, like violently, we're talking real slaughter with gruesome dismemberment, pools of blood and broken families.
Nintendo must be happy with the results so far.
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On the other hand here's an accurate depiction of anyone thinking the Steam Deck is a console: