How do Mormons defend Reformed Egyptian as a legitimate language?

[Reformed Egyptian](https://en.wikipedia.org/wiki/Reformed_Egyptian) is the language that Joseph Smith claimed the Golden Plates (or the Book of Mormon) was written in. But this seems to be a problem considering that there are no [non-LDS scholars that accept it as a legitimate language](https://en.wikipedia.org/wiki/Linguistics_and_the_Book_of_Mormon#Native_American_language-development) . So how do Mormons defend this language as real using actual evidence, rather than "just take it on faith?"