The theory was that someone misinterpreted 384-bit keys to mean the key must be a number between 1-384.
I think that's entirely made up, but it wouldn't be completely implausible to have happened while someone tried to troubleshoot why the first attempt failed.
The discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=2083449 really doesn't sound like that, but who knows what's getting lost in the "fog of war" we're currently getting on this all.
Instead, I consider a lack of concentration due to too much stuff going on around to be a big factor.
The biggest problem when working with Indian offices is that their crew always has to deal with weird shit continuously that it would be extremely surprising for me to have someone fully concentrated on their work.
A language barrier is not an acceptable excuse, especially in a country where the primary language of technology firms is English.