The essence of the concepts of Ahl al-Sunnah
The abundance or scarcity of followers is in Allah's hand alone.
The abundance or scarcity of followers does not establish truth or invalidate falsehood.
So, the guidance of followers is in Allah's hand.
The religion of Noah is the very same religion of Muhammad, peace and blessings of Allah be upon him.
Noah called his people for 1000 years, minus 50 years.
And only a few believed with him.
And Muhammad, peace and blessings of Allah be upon him, called for 23 years.
And a great Ummah followed him.
The essence of the concepts of Ahl al-Sunnah