As somebody who goes through the extremely hot August summer heat where I live I will tell you that no you don’t get used to the heat if you’re exposed to too much heat you’ll develop heat exhaustion, and if you keep going you’ll get heat stroke which can kill you.
What I’m wondering though is did Washington compost actually say this, or was it just made for the meme? Honestly if they did I would not be surprised in the slightest.