But seriously, of course infinite typewriter monkeys is a wonky metaphor, it's trying to make something about brute force combinetrics and infinity accessible in a casually intuitive way and apparently dates back at least as far as 1913
If it were a novel coinage...well, it wouldn't be a coinage at all, you'd just frame it as "a computer could—"
artisanal infinitely parallel monkey-typewriter generated arbitrary letter sequences