The thing is, since launch Nintendo has been trying to make sure there are no GameCube shortages (since shortages hurt the N64). So they've been making more than they need. Or, to phrase it another way, the GameCube has been selling less than they expected.
So apparently almost all retailers have an abundance of GameCubes on hand. In the store.
So Nintendo decided that they're essentially ahead of all the work they need to do, so they stopped making GameCubes for a quarter-year.
Then in their quarterly report (which isn't "sell through" numbers like from NPD or Famitsu) they mentioned that they shipped out 3.24 million GBAs worldwide in the last 3 months, and only 80 thousand GameCubes worldwide.
That is a really low number, so investors got worried. And sites reported on it. And assorted fanboys thought it was proof that Nintendo's turning into Sega. And other sites refused to believe that, so they figured that it had to be a typo, and started saying it must have been 800 thousand (which seems to have no basis in fact).
But it may as well have been zero GameCubes shipped, because Nintendo wasn't making any. Because they didn't need to. And that it wasn't a bad thing, but more of a way to wisely cash in on a symptom of a larger somewhat bothersome problem of of the GameCube not being grabbed up as rapidly as it obviously should be.