There is no spoiler in the title. The episode is called “Winds of Winter”. His article title spoils nothing. And you can’t act like the internet should wait until it can confirm that everyone has seen everything before discussing whatever thing it was that happened.

There are Dornish and Tyrell ships in Dany’s fleet in the end shot (plus, Varys is back, standing behind her). So she may not need them, but those ships have already joined her fleet.