It's only really fair to bring in the "hindsight" excuse in cases when nobody could have been expected to know better at the time. There were plenty of people back in 1968 saying Stormont should be abolished.

It seems to me that when people suggest that the Government (just about any Government) is up to dirty tricks, such as murder, it's dismissed as being just "conspiracy theories". But later on, when it turns out it was true all along, the failure to do anything about it earlier is brushed off with the "hindsight" excuse.