Now that I think about it, I'm not sure I can come up with any non-contrived example (maybe this [1]). I guess what's good is that it fits right into the rest of Vim very nicely, so I can just edit like normal, instead of fiddling with regexes.
For fun, I did that same example with multiple cursors + vs code: https://www.youtube.com/watch?v=H1uvNbtqJGk