While I have compassion for someone who planned to go on a cruise with a partner and when the partner backed out, they then were subject to the single supplement. As another poster mentioned, that is how the system works.
I did not read the article, however if he received a 125% voucher, that would somewhat offset the single supplement.
Many people today, too many in my opinion have a sense of entitlement and a skewed sense of fairness. I seem to hear this more from young people rather than the Viking Crowd, but then again I have had my comments deleted from the site that should not be mentioned.
The good life is expensive and many including my wife and I are thrifty in other areas so that we can enjoy things such as international travel including Viking and other cruise line offerings. This includes using airline miles to stay in the Chateau Frontenac in Quebec City before a cruise next month! I have always wanted to stay there and after my wife read the Louise Penny books, she is also looking forward to it.