No the Arabs didnot blindly believe in him(the prophet Muhammad)

The Meccan people requested Allah's Messenger (ﷺ) to show them a miracle, and so he showed them the splitting of the moon.

[Sahih al-Bukhari 3637]

List of miracles:

• Book Of Evidences: The Miracles Of The Prophet (ﷺ)
• The Miracles of our Prophet (ﷺ)
• 300 Miracles of the Prophet (ﷺ)
• Allah’s Miracles in the Qur’an