That seems utterly bizarre to me. I don't use "delve" frequently myself, but it is common enough that it doesn't jump out as an unusual word. Perhaps it is overused or used in a not-exactly-usual context that tips one off that it is LLM-generated, but by itself it signifies nothing to me.
It is a very common word used in Nigerian style English which was a very common place they were outsourcing RLHF tasks to. A sibling comment has a link but it is also easy to google.
Native English speaker here. It was the right word. At the same time, while “delve” is common enough to be recognized, it’s not that commonly used in American English, so I also was wondering if this was AI generated.
Apparently this depends on where people are. It is not used a lot in US English, but it is used a lot in African English.
Part of training LLMs involves extensive human feedback, and many LLM makers outsource that to Africa to save money. The LLMs then pick up and use African English.
See the link in this comment [1] for an interesting article about this.