As a comparison, the PS4 sold 4.5 million units in its first two months, the PS5 sold 4.5 million units in its first two months, and the Switch sold 2.8 million in its first month. 6-8 million in one month would be ~> half of Wii U's total sales, and more than Steam Deck's lifetime sales.
So I guess that boycott over pricing was successful.