In reply to Tomas M..

Why would it have a negative impact on them? They are not, nor should they be responsible for what an individual or business does with the product once it has been legally sold and transferred.

If your neighbors moved and the couple who bought the house stopped maintaining their yard, whose fault is that?

I'm sure the plugin author didn't sell Display Widgets expecting this to happen, but placing any of the blame on them whatsoever is wrong.