The ability to join together optional "contexts" (this visual selection, this line range, the whole file, ...) with "verbs" (delete, change, append, ...) and "adjectives" (up to, including, ...) and "nouns"/"things" (word, WORD, next search term, letter, line number, ...) is what makes the language both worth to learn, and powerful.
This is enlightening: https://stackoverflow.com/questions/1218390/what-is-your-mos...
My point being: aside from the few IDEs which "really include" a copy of "full" vi/vim (i.e. including a remote neovim they communicate with), a well-seasoned Vi user is probably far better off using the real editor, than they are using a crippled "vi-like mode".