Context: LaTeX is a typesetting system. When compiling a document, a lot of really in-depth debugging information is printed, which can be borderline incomprehensible to anyone but LaTeX experts. It can also be a visual hindrance when looking for important information like errors.
Okay now what would happen if you made him use LaTeX?
I don't know if that person would have the intellectual capacity to actually understand the very concept of TeX: Writing a source and compiling it into a document. That idea would probably fry his mind.