Going a bit into lore, would not the reappearance of dragons itself symbolise a dragon break.
As a bunch of dead non existant beasts of huge power reappearing one day, as well as the Dragonborns rebirth.
Would seem like a non linear break in time itself to me.
No, only the dragons of Akavir were all killed. The dragons of Morrowind continued to live and there was even a dragon in Redguard. The peoples of Tamriel "believed" they were all dead and extinct they were just missing, not extinct.
Now they've caved to the market we have...... "we want to be dragons".
They didn't cave, it was just an interesting next step in the series. Dragons have always been part of the lore, they just never have been in the game in force. There was always this mysticism behind them. Then they decided it was time for their return. If the dwemer were to reappear, would it be caving into those that want dwarves in the game? No, it would just be a nice plot.