Debatable, since many of the dose rates many evacuated from are below the level that causes any measurable harm. Temporary short term evac is understandable while the event unfolded but they should have given people dose rates and health info (e.g that less than 300 mSv/yr doesnt cause measurable harm) and let people decide for themselves.
That seems a pretty reasonable thing to consider since it is one of (or the?) major risk with nuclear power.