No, poor Squishy.
It's so sad! He needs a little comfy bed and a blanket to wrap up in and someone there to just pet his head and say everything's gonna be alright, poor Squishy poo.
Wow, that's much worse than I was fearing. And all of the ones we've met so far are direct decedents of Nel (Serinar, Dannathion, Siderion, Nameria, Ruthian).
It's probably even worse than this: the Red Dragonflight waged a genocidal war against the black dragonflight, specifically targeting all potential broodmothers. Wrathion also participated. So even assuming the remaining individuals are fully unrelated (unlikely) there are probably only a couple females tops in the remaining 15.
With 2 females there are only 26 potential reproductive pairings between unrelated dragons. Throwing in Nel only raises this to 28. There are also only 92 potential non-reproductive pairings that could improve social stability among these (hopefully) unrelated dragons.
“I hate to rain on the party, Gramps,” said Serinar. “But black dragons who aren’t related to you are still quite nuts. They don’t have your genes to cure themselves with."
This has a very dark meaning. You see, the only ones that have officially been cured are the ones related by blood to Neltharion. Which means if Nefarian and Onyxia had survived, they too would have been cured of the evil.
And also it is a fan speculation, though it is often treated as fact more than fiction, that Nefarian and Onyxia did in fact have sex with each other despite being brother and sister. That also means that many of the black dragons born from their union have some genetic problems.
The other issue is that the black dragons who are not directly related to Neltharion, as in they were from black dragon ancestors who existed prior to the creation of the Aspects, when they were corrupted, it's very hard for them to become uncorrupted by Neltharion himself. Though Nel has some connection to them through his own attunement as the flight's leader, it's just harder for those who aren't related to him to be cured of the madness. Whereas the ones who are related kinda act like fragments of Neltharion himself. When Neltharion is cured and is good, it means they are cured and good.
But again, some of these dragons can't mate with Neltharion. Now, maybe some who are like grandchildren times 30 might be able to because there's enough genetic diversity in them to allow such a mating, but still have some genes from Neltharion to allow them to be cured when he was. But given the state of the Black Dragonflight right now, and the fact that they are close to being functionally extinct, yeah...this is going to be a huge problem.