Knowing something and experiencing it are two different things.
Everyone moving there knows it gets hot. But if you've never experienced 100F heat - especially not days in a row - you have little to compare it to. Theoretical knowledge compared to applied knowledge. Heck, even if you have experienced it, you probably did it in completely different conditions. For example, the Midwest gets hot sometimes, but that heat is different and lasts shorter times than it tends to in Austin. (Which is also the reason folks moving from Arizona to Indiana get shocked at the heat + humidity combination or why 80F near the arctic feels warmer than it does in some other places)
This is rhetorical ofc because I have interpreted to be a baseless attack on the tech laborforce because of their above mean income.
Austin has long historic temperature ranges well above 100. The highest temperature (112) was recorded in 2000. It gets really hot. The record for the number of days > 100F was set in 2011, at 74. It also gets really cold. The record for the most number of freezing days was also recently set in 2022, with 51.