Some of the commenters in that issue have a very regressive and myopic stance. Raising such a public ruckus will heavily disincentivise scientists from publishing their code in the future. Decisions will still be made, but in the dark. There's a certain amount of self-stroking going on there with people feeling better by putting down code produced by non-professional programmers.

A much better response would be:

1. Scrutinise end users of the code: demand that governments only use this data if proper due dil has been carried out.

2. Submit code improvements.

3. (maybe) Demand that peer reviewers are more rigorous when checking the way results are generated. The issue with this is that this would also be a strong disincentive for scientist to publish their work.