> By December 2019, Nintendo reported life-time sales of 13.56 million Wii U console units and by September 2022 103.53 million software units worldwide
and
> Despite this, the console had third party releases until 2020.
So software sold in September 2022 can no longer run in April 2024, and you somehow try to justify that by "legacy platform"?
Production stopped, eventually hardware sales stopped, too, but software sales for the locked in hardware did not until recently.