"cat" sounds like the abbreviation of "catenate" not "concatenate". Perhaps its possible that later versions of cat allowed more than one argument?
https://en.wikipedia.org/wiki/Cat_(Unix)#History
Whereas "con"catenate means to link separate things together. These are minor distinctions, but if somebody is going to call things "asinine" they should at least get the pedantry correct.
How’s that for pedantry?
Edit: that wikipedia page makes it sound like the program it replaced was the one that prints a single file to the screen.