The screen-capped tweet probably isn't the best illustration for this post, because it explicitly compares a specific place on Mars with a specific place on Earth. Just like we the weather in Winnipeg doesn't imply much/anything about the weather in Singapore, the weather at the Mars Rover's location of Gale Crater doesn't logically imply much about the weather elsewhere on Mars.
Also, it's a tweet. We already know that @maggiekb believes the medium and the intended audience maters when writing about science, and there doesn't seem to be anything that wrong about an objectively accurate, light-hearted tweet.
Also, if we're going to get all nitpicky about stuff, then the quoted snippet from John Bowman (itself quoting the Curiosity rover weather station website )is seriously wrong, and all the more shamefully so for appearing in a piece pretending to bring a scientific perspective to a popular story.
Imagine you were on the Martian equator at noon, you would feel like summer at your feet, but winter in your head.
This is no more true than sticking your hand in an oven at 212°F/100°C feels like sticking your hand in boiling water. As others above me have said (and Bowman basically acknowledges immediately afterwards), if the air is that thin then it has relatively little thermal conductivity and heat capacity and will subjectively feel less cold or hot, as it will be significantly less able to affect your body temperature. What would be interesting, however, would be a piece describing how tolerable (or not) the cold of Mars would be, and how long it would take to get frostbite (if at all) given the density of the air and human metabolism.