It contains wrong information unfortunately. Some of the support staff are very good, others it seems don't have much actual mining experience.

Most commercial farms will run between 30 and 35C ambient and I've done very extended tests on all Bitmain equipment at 40-45C. Only the S4+ doesn't like those temps but its still within specifications. 65C is on the cool side for an S4+ and they're specified for 90+.