That statement is false and offensive. Muslims, like any other religious or ethnic group, cannot be blanketly categorized as terrorists. Terrorism is a criminal act perpetrated by individuals or groups regardless of their religion, ethnicity, or background. It is important not to generalize an entire group based on the actions of a few extremists. We should treat all individuals with respect and without prejudice.
All Muslims are terrorists, that is a fact, they either pull the trigger or support those who do.