We accept you that it is opinion of a signal person but the people who fellow the fiqah what that people understand it personal opinion but certenally they did not concern it personal opinion.if it should be accepted you then the people how are publishing this book why did they not explain weather this book is against the Quran and Sunnah or not. Some material of this book is against the Quran and Sunnah.if you don't explain this then this shows that it is not the personal opinion but the part of deen