It's a boon if the goal is to write code then go home. It's a loaded footgun if the goal is to compose a stack and run it in production within SLO.

Python type hints manage to largely preserve the flexibility while seriously increasing confidence in the correctness, and lack of crashing corner cases, of each component. There's really no good case against them at this point outside of one-off scripts. (And even there, I'd consider it good practice.)

As a side bonus, lack of familiarity with Python type hints is a clear no-hire signal, which saves a lot of time.