Actually, Vox did explain why all memes use the same font. The font is called Impact. A designer named Geoff Lee originally developed Impact in the mid-’60s.

NEW YORK, NY / ACCESSWIRE / September 29, 2023 / Real Smurf Cat, affectionately known as Shailushai, is making waves in the cryptocurrency world, introducing a distinct approach that sets it apart ...

Most image memes use the font Impact. Impact was one of Windows' "Web-safe" fonts, ... US market indices are shown in real time, except for the S&P 500 which is refreshed every two minutes.

The font is called “Impact,” and has a rich history. It’s actually one of the core fonts of the internet and was originally created back in 1965, made by Geoff Lee using hand-cut metal.