Also because no one works this way. The coding challenges are contrived and don't really reflect typical work. Like I've never had to do anything like strings that occur more than k times.

And these clarifications are mostly dumb. If you pass an emoji into my string function I'm okay with it not working. Similarly if you pass in a negative number then that's your own dumb fault if it does something unexpected.

That's how the real world works. You go to the extent that covers 99.99% of cases. If that means it doesn't work in your crazy scenario, well, create a ticket and it'll sit in the backlog until we clean up old tickets.