'Should' is not the same as 'must'. No one is stopping you from submitting "Defeat 10 False Gods in a row with an unupgraded mono".
I am fully aware of this despite the "joke" post I made. But on that note, Since John already posted that as a bad challenge idea, anyone can see that posting that same idea would be unoriginal and absurd despite it being technically valid.
The challenge I'm thinking on submit is endless for example. The goal is to get as far as you can, there's no way to "beat it".
what you are thinking of submitting resembles an
arcade game that specifically isn't beatable but instead is an endless and continuous cycle of gameplay and thereby considers a point system (represented by how far you've gotten) as its most important indicator of progress, the challenge of attaining a high-score.
However, since it is not beatable, Unless Jonathan changes his criteria ( "Beatable") then I would assume that technically this submission is invalid.
But obviously Jonathan would be the one to decide.