I'm with you, came here to ask this too. This is how I would have read it:
"Crack engineer" someone who is an excellent engineer, I feel like this goes back to at least the early 20th century, certainly long before gaming culture.
"Cracked engineer" a damaged person who is an engineer
"Crack engineer" someone who is an excellent engineer, I feel like this goes back to at least the early 20th century, certainly long before gaming culture.
"Cracked engineer" a damaged person who is an engineer
Shrug. Language changes all the time!