Each to their own, I use both for different things, I like EveryDoor UI better for placing POIs.
<a-a>' # select string including quotes
<a-S> # select first and last character of previous selection
r" # replace selections with "
Trivial, 5 keystrokes and it works for any type of quotes (I can do for example <a-a>`). Notice that "replace quotes around the string" is not built-in operation in Kakoune.