Good job name calling - I am sure that makes the authors want to give up something they spent a lot of time creating. I agree, do not donate if you don't want to - same thing the authors have said for a long time. As to honor... walk a mile in their shoes first and see if you feel the same way. Create a business, put in thousands of hours into it and then just give the business up to another person to take it over. Honor, ethics and/or morals do not dictate that they hand over their business and their work.
You know they are in talks to hand it over to Rythal, right? You are aware that in this same email they have said that they have given up on carbonite, right?