Heat of fermentation is 23.5 Kcal/mol for glucose. That's one degree C for a 23L batch PER 180g, about double that for a mol of maltose.
With Distiller's yeast, they warn you to never do ten gallon batches without active cooling.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk