I think there is a significant difference in that developing g your own language requires a rewrite to use new language, not a tweak to existing code.. If you

I think there is a significant difference in that developing g your own language requires a rewrite to use new language, not a tweak to existing code.. If you insist on them "creating a new language" then say that they created a new language to speed up development, not to ship their apps. They were already shopping their apps. This is an optimization that helps them speed up development on their existing codebase.