Which “Prince Mohammed”? The Saudi Royal family is huge (15K+) with about 2000 who really matter. You could probably fill a decent size conference center with “Prince Mohammeds”
There are two Prince Mohammeds who matter the most, and from whom a claim like this would really matter:
Muhammad bin Nayef (aka MbN) is the current Crown Prince and Heir apparent. He is first in line to be King when King Salman (now 80) dies. He matters, he has the current confidence of the Saudi establishment, and if he states something, it is effectively state policy.
The other important “Prince Mohammed” is “Mohammad bin Salman” (aka MbS) Defence Minister and prime rival to be the next King. He matters, he is believed to be the driving force for Saudi intervention in Yemen, and is noted for his arrogance and (unmerited) self confidence.
If it was any other “Prince Mohammed” it is a nobody who is posturing and bragging.
Title says crown prince
Story said Mohammad bin Salman.