Reducing the salary after job offer? is getting a lot of attention, probably because it started out as a "bad stuff happened to me - is this ethical?" question, which is a magnet for opinions and anecdotes. It is currently +58/-2. I have edited the question to focus more on the "why would they do this?" aspect, which is at least an answerable question. (I see no close votes, so did that instead of mod-closing as "primarily opinion-based".)
Two of the answers are anecdotes that, to me, stop short of actually answering the question. This one is +31/-1 and this one is +6/-4. Both tell stories and offer opinions about the unethical nature of what happened, but neither answers why a company would do this. One of these answers has attracted NAA flags.
What if anything should be done with this question and its answers?