Not everything in Jan’s lab was bad and I think it’s also important to point out that my relationship with Jan was often professionally respectful. For example, Jan repeatedly asked me to peer review manuscripts that he had received from various journals from all impact levels. The level of trust was high. Jan would give me his log-in and password. Our routine was that I’d submit reviews for manuscripts without him reading either the manuscript or the review that I wrote; it was completely hands-off. Honestly, I quite enjoyed this, although my work was always claimed in Jan’s name.
The scientist in question seems to see little wrong with that. Can you provide an ethical analysis of this behaviour?