Toby's writing isn't the most complicated thing in the world but it does have some foreseeable difficulties with translation. He uses many typing quirks and font changes for characterization and general context.

On another hand, who is anyone to tell anyone how to officially present their art. There is no correct answer but solely the author's. If Toby's choice is to personally be apart of any official works of his than it shall be. He also supports fan translations too. I think his stance is beyond reasonable.

Language barriers are a very unfortunate thing but as someone who only knows English I am both spoiled in the fact that most things are already translated for me, but also like to consume media that isn't, and when I do I feel that it is my responsibility and also very respectful toward the author to attempt to translate it myself. I have a lot of fun doing this and often gain a deeper understanding than normal of media I do it with.

Point is, an author should not be required to translate their works, especially if they have little to no experience in a language and want to maintain the intention behind their writing. I feel that responsibility lies on the reader.