Don't even joke about that!!
Seriously tho I think it might've been both COVID and the game not entering development right after Odyssey launched the reason why we haven't seen it yet. I think EPD Tokyo potentially working at two games at the same time is the other reason both of them are taking longer to develop than usual.
I think that would be similar to how BotW released 5.5 years after Skyward Sword but had "only" 4 years of dev time, Galaxy released 6 years after Sunshine but only had three years of development as the team didn't start it until completing DK late 2004...
In a crazy theory in my mind, both the 2D DK game and Odyssey 2/whatever next 3D Mario game are coming next year.
Holiday 2011 - Zelda => early 2017 - Zelda
Holiday 2013 - Mario => holiday 2017 - Mario
Holiday 2023 - Mario / early 2023 - Zelda
It makes sense. Six years between main entries and each taking 1-1.5 years more to develop than before due to the pandemic and bigger scope.