In terms of ceiling fans, it depends on the fan, it's location, size and speed.
When I lived in Florida I had 2 20" oscillating fans blowing in my lanai from 7am until 7pm during most warmer days. That was 10 months a year. I wanted them to gently move flowers and foliage from twenty or so feet away. That I figured was good air movement. I was trying to simulate conditions in the wild.
If humidity and moisture become an issue indoors, you need to stir up the air. If a ceiling fan accomplishes that, that's good.
Fast forward to my plant area in Michigan. It is a 12' x 16' room with four lit plant areas, shelves included. When the plant lights come on in the morning via of a timer, the fan comes on. It is a 20" oscillating fan, set on medium, so that a flower spike gently sways in the breeze. That is good air movement. This $20 fan purchased in 2018 is working just fine! 👍
