Does anyone know WHY the button works better when the modifiers are on the image as opposed to the button itself?

      //This button is hard to press
      Button {
          //do stuff
      } label: {
          Image(systemName: "plus")
      }
      .padding()
      .background(.black.opacity(0.75))
      .foregroundColor(.white)
      .font(.title)
      .clipShape(Circle())
      .padding(.trailing)

      //This button is easier to press
      Button {
          //do stuff 
      } label: {
          Image(systemName: "plus")
              .padding()
              .background(.black.opacity(0.75))
              .foregroundColor(.white)
              .font(.title)
              .clipShape(Circle())
              .padding(.trailing)
      }