Mention Herakles in a Republic of Singapore Navy naval base and sailors within earshot might assume one is referring to the air/surface search radar on Formidable-class stealth ships.
As for the guiding principle on Accuracy: No hypothesis can be valid unless it is accurate. It is as simple as that.
While armchair defence observers pooh-poohed the old tech (it was unveiled decades after it was drop tested in the South China Sea), professional eyes would see an indigenous guided weapon capability that unearthed more questions than answers. What is the state of Singapore's present-day GW capability? What other operational GW munitions customised for the SAF are in service? Besides guided weapons, what else has the defence eco-system been busy with in the intervening years?
Depending on which side of the border you live on, their story would either knock your socks off.... or keep you wide awake at night with worry.