They are trying to tell you not to do something risky (for you and for them I guess).
Complain about it on some abstract rights-based level all you like if you feel that it's a strange "concerning" issue. They are good people and they are doing this for the goodwill only (really: read the story about how Matt Mullenweg bought the simplenote.com domain for $29,000 and gifted it to them before he even discussed buying them out).
