This is basically an article promoting two Tweets (something like Toots, but on a monetized closed source for-profit platform run by a highly questionable billionaire).
No, it's the lack of support in web APIs. Every api is based on width and height, viewport width, viewport height. Nothing allows you to find the angle of the display, rotate DOM elements to align, wrap based on diagonal boundaries etc.
Ackshually the social network you're mentioning has changed its name so instead of "Tweets" they should be "Xeets" (like sheets por shits if you prefer).