Delving also has the implication of going deep, while exploring has the implication of going wide. I wonder if human authors really do a good job of picking the right word there. Either way I wonder if “misused delve” could be an interesting signal.
It's being looked at as an AI signal, which is causing labs to artificially suppress it, so it may end up being a "human-authored" signal in the end. Give it a year or two, though, and we're looking at AI with superhuman word choice. There will be dozens of layers of introspection underlying the selection of each word, in a broad context, articulating exactly whatever the user wants. The philosophical and psychological implications of superhuman text generation, beyond the p(doom) discussions, gets crazy. Superhuman persuasion is one facet, but unintended manipulation through reinforcement of secondary and peripheral notions in the context create all sorts of weirdness.
Language communicates ideas, and we've made machines that produce intricate, sophisticated ideas that land in our brains. The consequences are going to be fascinating.