I just noticed it more often that it's getting used as a positive connotation.
From the article itself:
"Over-engineered, absolutely. [...] Every check earned its place by catching something I’d otherwise have shipped. Would I do it again? Without hesitation."
From a consumer POV it is -- even if only read as 'not under-engineered'.
In an over engineered thing margin is left on the table which the consumer gets to take advantage of. Noting that in the real world items are often exposed to loads and demands above and beyond the idealized design constraints a 'perfectly' engineered item would just meet.
