Facing the temptation of becoming an Ancestor Dragon, any protests or objections are futile. Especially when Noah, who has already become an Ancestor Dragon, stands as proof, no parent hoping their offspring will excel can resist.
Indeed, not every dragon can become an Ancestor Dragon. The expectations of most dragon parents are not that high; as long as their children manage to partially revert to their ancestral bloodline, that's already exceptional. Becoming an Ancestor Dragon is a tremendous achievement.
As long as Noah can lead a small number of the younglings in the Dragon Academy onto the path of reverting to their ancestry, not only will the Dragon Lords under him be completely devoted, but even those dragons not under his rule will enthusiastically send their offspring, even at some cost.