I agree ^.
European keepers in the past did allow night drops in temps as a general practice, from what I recall reading a big handful of years ago. I'm not sure if anyone does that anymore, but for many reptile species that's a pretty natural state of affairs. I'm not sure how big a drop is appropriate or tolerable, or at what rate of temp change. I've not heard that any fluctuation it is actually beneficial so my current aim is to keep it tight.