-30C is a normal temperature in many countries, doesn’t make it any less miserable

It would definitely cause the sweating the symbol indicates, at least for me. I would call it hot.

It’s normal in my hometown but still definitely hot

People can die in that heat. People have died from that heat this year.

Normality in some countries means little when it happens somewhere it’s unexpected and people aren’t used to it. Not only is acclimatization a thing, meaning that people who genuinely aren’t used to these temperatures suffer more from them, it’s also relevant how the local culture handles high temperatures.

Where it’s normally very hot or very cold, infrastructure, daily routine and other culturally influenced elements provide for relief in some form. Texas suffered immensely under a cold period that other places in the world would consider utterly unremarkable, simply because it is utterly beyond what had been anticipated.

Telling people in those situations that something isn’t that hot/cold is a bit callous.