Instead they hid themselves from those that should have accepted them, because they were afraid. They were afraid that something would happen to them if the royal family found out the truth of who could shift into a dragon. So because of this reason there are at least 2 generations of Dragon families that have lost touch with their kin. Some humans may have forgotten certain parts of their lineage, the part they call 'dirty' but the Dragons have never forgotten the humans that share their blood. Not all dragons belong to a family that has humans in their lineage, some are purely dragons, either because they want to 'keep their blood clean' or because none of their mates have been a human yet. The Dragon families that have a mixed family have a whole week in our clan where they celebrate that they are a family that has diverse relatives, even if they either don't acknowledge us as their families or aren't able to publicly show we are part of their families.
We do have some families that have never been shunned, they just have to sneak to see their dragon relatives. In our clan we only have 3 families that actually get to see their human families, Mine is one of them that haven't been shunned, the only human family members that we never see are the ruling royal family. Well the ones that are currently in charge and have no idea where they come from because their parents never told them. Those that are old enough to remember that they came from dragon lineage and literally share the same blood as us, do come to see all of us be it family or friends they still have here in the clan. Every time my cousin The Queen Mother, Tilly, comes she always makes sure she brings any new medicines, sturdy material suitable to make clothes, food, and anything else she thinks we may need since most humans refuse to do any type of business with us. Cousin Tilly is mom's relation and she is from the kingdom, Cliffington, that borders ours. That kingdom actually has a halfling as their king, cousin Toby makes sure to keep the peace between both races. Cousin Toby is actually pretty cool. On my 16th birthday last week he sent beautiful hair combs with onyx on the handles of them. They are beautiful and very light weight, he even had his friend Fern the fairy enchant them so when I'm wearing them they not only won't get lost if I have to shift, but also double as a tracker. Toby and Fern even were able to make sure that my friend, Onyx Marie, from the BigFoot Tribe was present for my birthday. This reason for the tracker is I'm the only girl left in my batch of hatchlings to be born. My family actually doesn't have any other hatchlings other than me, others in the Clan had hatchlings this year but not us this time.