question #2 Sahih al-Bukhari 3537, Book 61, Hadith 46 : Why is it important to differentiate between using the Prophet’s name and his Kuniya?

While the Prophet (ﷺ) was in the market, a man called (somebody), “O Abu-l-Qasim!’ The Prophet (ﷺ) turned
to him and said “Name yourselves after me but do not call yourselves by my Kuniya.”