Maybe there aren't that many OGs who still have part of their stash on such a wallet. Luke is quirky and maybe sentimental about it.

Or he encrypted his wallet using his PGP private key which was stolen as alluded to elsewhere.

I mean the more I think about it, the less likely this is the case, since Luke is a public person who has a high probability of being targeted. 

BITC0IN

The tweet doesn't imply that the thief was targeting Luke specifically. Just blanket targeting all private keys generated with a bad random number generator.

Lumor

bitcoin

Bad Entropy is One Theory For Luke Jr's Recent Loss. Evidence of This Elsewhere?

That sounds like FUD.

Or like a take by someone with poor understanding of cryptography. That's not how bad entropy weaknesses work or can be exploited. You would need to know what he used for randomness when generating keys.