I think niche words like "delve" get replaced by phrases like "deep dive" to accommodate ESLs, especially in big business and software development. "Delve" is t

I think niche words like "delve" get replaced by phrases like "deep dive" to accommodate ESLs, especially in big business and software development. "Delve" is the word to use, of course, but if you're going to lose (or annoy/insult) your ESL audience by using fancy words, maybe just being accommodating has value.