"Cryogenically heat treat the blade..."
No, the blade is heat treated, but cryo is a separate processing step to convert the retained austenite to martensite and refine grain. This is done after heat treat.
"I think they forge the blade..."
The AUS 8 blade is stock reduced and not forged. They basically grind away what isn't knife as opposed to pound the hot metal into a nearly final shape.
The Aegis is a good knife at a good price point.