Why do you find it interesting when it appears there's no real discussion between gmaxwell and the wallet's author? gmaxwell may've had some valid points, some where addressed by the author, some were opposed.

I find it hard to judge when there's no followable exchange of arguments and appropriate discussion.

And frankly gmaxwell doesn't present a lot of evidence for his judgement of the author and the wallet, does he? His post is short, enumerates some points of critisism and that's basically it, no more interaction in the [ANN] MMGen, a  complete Bitcoin command-line online/offline wallet solution.

OK, I haven't audited the code, nor am I really qualified to do it. To me gmaxwell's post looks more like a rant when you had a bad day and stood up with your left foot, stepping at the wrong angle and force on some leftover LEGO bricks when you didn't expect them to be on the floor. We all know how that hurts...

I'm stretching my imagination here for sure. In most cases, I value gmaxwell's contributions in this forum. In this case, I find his negative flag and missing explanatory evidence for it quite the opposite.

DYOR and some less known wallet software for sure needs more eyes and auditing on it. Open-source multi-coin wallets are rare, persistent developers improving even such less known projects need more attention.