As other commenters have pointed out, there is actually a BASIC interpreter available from the 3DS store, so interpreters aren't forbidden. And Nintendo has nev

As other commenters have pointed out, there is actually a BASIC interpreter available from the 3DS store, so interpreters aren't forbidden. And Nintendo has never been to friendly to software use outside what they explicitly allow. I haven't seen anyone defending Nintendo's use of proprietary platform lock-in, but only that Nintendo should have been notified about it as part of publishing the game.