Temperatures below 80°C unter normal load should be nothing to be worried about.
There was a discussion on this topic a while ago. I think the most interesting part is about the capacitors lifetime in relation to the temperature: Axt1800 running hot, 75C - #14 by Johnex
I think in one update the threshold for spinning the fan was set down. But I can’t remember it it was from or to 85°C.
It should be mentioned in the thread or documented in the Changelogs.