These maps are so misleading because the scale of the planes is equal to the size of Manhattan or something.
⚡️🇺🇸 NEW - A stunning flight animation reveals just how crowded the skies were on Thanksgiving, as millions of Americans traveled and air traffic hit its highest levels in 15 years.
https://blossom.primal.net/537576b8a53e48fe7570a12b9552159ad93fe5a44a48abd0ce391566be35b22c.mp4
Discussion
Same problem with pictures of the "cloud" of satellites around earth.