That was a good catch:
Excellent job they’ve done on that score thus far.
Lawrence Wright author of 'The Looming Tower' is always worth reading.
I fully accept that the Egyptian internal security methods have been brutal, so acting as a catalyst for the conversion from Islamist to Jihadist. This must be balanced by the complicated discussion and eventual negotiation between the state - via the internal security agencies - and the GIA, which led to them renouncing the Jihad.
It was quite bizarre to listen to a former GIA activist explain he'd been released on strict conditions before 'The Arab Spring', one condition being not to play an active role in politics. So when the protests began he could not be involved and had to wait till a new agreement was reached (a researcher plans a book on this intriguing aspect).
Secondly, Ayman al-Zawahiri when he left Egypt was only able to take maybe two dozen supporters from the tens of thousands of militants. The rest stayed at home, many of them in the full knowledge that Egyptian internal security would be watching one day.
As an aside now - the impact of imprisonment, whether following a trial, is an important issue that often is neglected for years and then officialdom has to catch up - an issue IIRC we have touched upon elsewhere.