The good news is it's 2021 and we have much more advance ways to change swings than taking tips from Cito and Murph. Throw him in the lab this offseason and see what happens....now obviously you'd think that if it were that easy, Pittsburgh would have done the same, but there still seem to be organizations out there who simply can't get the most of the talent they have (Cole, Meadows, Glasnow, Musgrove, etc.) are all recent examples out of Pittsburgh.
Now that said - I was just trying to make a little joke comparison. There's probably a 98% chance Polanco is pure garbage and nobody can fix him.