@gaylea1 That’s pretty much what I was told also. In fruits that you cut through the skin or rind you should wash them because the knife can cut through and introduce bacteria to the fruit.
Something I don’t think was mentioned to me by my transplant group is to wash the top of cans before you open them. There can be bacteria that will get into the contents. This is especially important if you are not cooking the contents or bringing them to a high temperature. I’ve been doing that for years.