>Some people, when confronted with a problem, think “I know, I’ll use regular expressions.” Now they have two problems.

The only time to use a regex is when searching with a human in the loop. All other uses are better handled some other way.

>They could do a full-blown NLP-driven sentiment analysis on every prompt but I reckon it would not be as cost-effective as this.

Every conversation is sent to an llm at least a thousand times the size of gpt2 which could one shot this nearly a decade ago.