The way this is presented is pretty clear and is not 'provocative'. It is simply data and simply put, you ended up getting tagged because you canceled on somebody and it ruined their day.
The number of cancellations is also listed to provide a clear picture of people that are indeed exploiting this poorly designed system vs just making deck changes.
At the end of the day, people renting cards want to rent them at a fair price and not have to worry about scrambling last second to replace cards they had been renting for long periods due to this system. For those people it just doesn't make sense to rent from someone that has a record of canceling and creating that scenario.
This isn't personal. No one is blaming you for making money or the most you can on your investment. This is just the market reaction to that behavior.