According to Nintendo themselves, they sold 160,000+ Wii games during the first 3 months of 2021. That's down from 880,000 a year earlier, but is still impressive for a "dead" console. Nintendo of North America no longer has the ability to press new discs, but who knows how many "new" copies of Mario Kart Wii and similar titles they already had printed up before they stopped in 2019. And Just Dance 2020 for Wii has over 4000 reviews on Amazon.com, showing the popularity of that title right up to the present.
Source: https://www.nintendo.co.jp/ir/finance/historical_data/xls/consolidated_sales_e2103.xlsx
Source: https://www.nintendo.co.jp/ir/finance/historical_data/xls/consolidated_sales_e2103.xlsx