Yeah "we need to break all encryption to catch people planning terrorism in Facebook groups, e-mail, and unencrypted SMS..."
Most terrorists are idiots because most people who are not idiots are not terrorists.
Most terrorists are idiots because most people who are not idiots are not terrorists.
Aside from 9/11 none of them have operated successfully in the US and your domestic terrorism has mainly been perpetrated by individuals or very small one off groups of just 2 or 3.
The Provisional IRA ran fundraising operations in the US: https://en.wikipedia.org/wiki/NORAID
On average a terrorist would be smarter than the average person. Terrorists are highly motiviated individuals, they can deeply understand an ideology and they activity learn/train in specialized skills. Compared to the average person their IQ would be 20 points higher.
Being a terrorist isn't easy. It's not a job for everyone.
Looking at what motivated most of the Capitol insurrectionists does not support this claim. They are seemingly unable to distinguish reality from obvious propaganda or wild conspiracy theories.
Pick one
Because the stupid ones get killed/thrown into jail