Further to the Varsho in LF point, CF gets a +2.5 positional adjustment and LF/RF get -7.5. So that's 10 runs or a total of 1 win, which seems significant.
But that's per 162 games. Nobody is playing that many games so that eats into the run total a little bit. Then factor in that Varsho played 64 games in CF last year and that eats into it even more. Then there's whatever value comes from not having to carry a 4th OF who can play CF (or carrying one that can't really play CF that well).
By the time you factor all that in, Varsho's WAR probably got dinged by about 0.2 or so. KK putting up a fat WAR number more than made up for that in '23. Didn't work in 2022.