It does beg the question, if it's within the valid play space - why did Bri Bri call it an exploit?
I've heard the port of Rv 60 ha a game breaking bug in, I think, the final boss...certainly Bri Bri is aware of that.
Why didn't she patch that???
I get the distinct feeling bri bri has never had to work on old, potentially brittle code (perhaps any non-hello-world code), especially something that can use optimization tricks like a non-typing-tutor game (remember the first time you saw an unrolled loop? bri bri doesn't) - tricks that can make fixes harder,more costly, and potentially break things even worse
detecting and throwing a message is a layer on top, that's reasonably isolated.