Maps are hard. The world is 3D and maps are 2D and something is going to be distorted because of it, especially so if you want to show the entire world.

It's a case of "pick your poison" and maps tell us as much about the mind of the map maker as about geography, sometimes more.

So maps tend to display and emphasize what's "important" to the map maker, which means a lot of them exaggerate the size of developed countries and give short shrift to other countries.

For some cool insight into that, Google up maps of Oceania on YouTube. For example: https://www.youtube.com/watch?v=tCsHWmAKCgQ