How often have you been asked “How are you studying Japanese?” only to get stuck in an annoying conversation with someone trying to explain your methods. Multiply this irritation when you are talking to someone who is a Japanese teacher or a Japanese person who studies English.
Unless you are talking to close and understanding friends or family, you want to avoid this exchange at all costs. Why? It inevitably turns into questions about where you went to school to study Japanese, what textbooks you used, who taught you Japanese, etc. When someone hears your answers to be not what they expected, it has the potential to turn into an argument about language learning methods.
If you are using this website, or any other non-conventional study method that doesn’t involve textbooks, a classroom, and a teacher, people unfortunately will have a tendency to doubt you, argue with you, and convince you of what others have convinced them of.
Discussing methods with other people is irrelevant. Whatever brings you results is all that matters. Once your Japanese is good, who cares.
Save yourself the time, and come up with a simple answer to escape this mess. I like to answer with: “You know, the usual methods.” Every wasted moment you save by avoiding these situations will get you fluent that much faster.