Does it get any hotter than 92? That is certainly warmer than safety would allow for many species...but doesn't seem that bad for ball pythons. A lot of people keep their warm spots at 92-94. While I do think it's not ideal...I don't think it's necessarily "dangerous" for a ball python to be in a box at 92 for a few hours.
If it goes much hotter than that...then yes...I can see the point. And certainly for some colubrids or delicate geckos, (for instance) that would be way too hot.