[gruez]

I don't think this is a relevant factor. According to one source [1], the optimum brewing temperature is "around 198-202ºF". That's only around 10F away from boiling. I'm not sure how much difference that would make in terms of burning. Keep in mind that something that's hot also cools faster, so by the time it ends up being served, the difference is likely much less than 10F

[1] https://www.seriouseats.com/make-better-pourover-coffee-how-...