I guess I agree, heat has been a concern of mine for the last couple years, running in blazing hot summer festivals nestled in with a v3.
But I haven't been burned yet.
(Other than by touching the V3 on a day like that!)

I think I've had two card failures that seemed heat related.
But once cooled down the little thingy seemed to regain its little brains..
Yeah - vent, shade, reflect that sun away!