Earlier quoted context omitted.
The flaw in trying to detect AI by its use of particular idioms is that it would have learned these idioms from its training corpus, which consists of writings from actual human beings. In other words, some people actually write like this.
Key word here being “some” people. Not nearly at high enough frequency that this way of talking was noticeable before. AI uses this pattern CONSTANTLY and it’s very fucking irritating.
The valley girl using "like" every other word, for example?
Or I had a colleague who would use the expression "we can say" (in French, because we were speaking in French) basically every couple sentences for a bit.
Humans also repeat speech/linguistic patterns, therefore "repetition of the same pattern" is not sufficient to mark text as produced by AI :)