> Where they given a reward functions that way?

In general yes, if not these agents, then their shared lineage.

A preference for economy to combat overthinking and overacting. Like typically it's bad if "fix my 5 line function" were interpreted as "fix it, add 300 tests, create 500 lines of docs, run the tests 1000x to rule out false positives and race-conditions in tests". So "solve these problems" would not likely be interpreted as "make sure everyone else can solve these problems". Besides economy there's a "do what I mean" aspect of user-alignment that presumably the entire lineage has been selected for. So even if "solve these problems" might be reasonably construed to involve "hack these servers to do so", it still wouldn't involve "post solutions" or similar.

Doesn't seem to add up, even with slim details available and benefit of the doubt that weird things happen every day. Hence the suggestive-but-plausibly-deniable prompting idea. Notably this is not even bad for the victim in this case, since HF gets press and it's all AI boosting anyway.