The definition of a dynasty in sports is somewhat fluid. There is a baseline of success you need to avoid being laughed out of the conversation entirely, but how long the run spans and how much a team actually won are important factors.
Dynasties can also be viewed in tiers. Larry Bird’s three rings aren’t the same as Bill Russell’s empire, but they are both dynastic figures in Celtics history. It’s fair to assume the Celtics won’t run off 10 consecutive titles to match Russell, but the question remains whether they can rattle off a couple more to join Bird & Co.