question #3 Sahih al-Bukhari 3801, Book 63, Hadith 26 : What does the hadith imply about the changing demographics of the Ansar over time?

The Prophet (ﷺ) said, “The Ansar are my near companions to whom I confided my private secrets, People
will go on increasing but the Ansar will go on decreasing; so accept the good of the good-doers
amongst them and excuse the wrong-doers amongst them. ”