Programmatically press "delete" or "cmd + v" in sandboxed app

Im working on a small text snippet / lorem ipsum app as a side project and the idea is, for instance, whenever and wherever user types "lorem10" I'd like to print/paste 10 random lorem ipsum words.

Eg. "lorem10 " -> ("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do")

For that to be possible I need to,

• Programmatically press "delete" key to remove the trigger string ("lorem10").
• Programmatically press "cmd + v" for pasting the result string.

This is possible, even in sandbox! But it requires accessibility permission. For instance I can simulate "delete" key press like this:

func delete() {
    let eventSource = CGEventSource(stateID: .combinedSessionState)

    let keyDownEvent = CGEvent(
      keyboardEventSource: eventSource,
      virtualKey: CGKeyCode(51),
      keyDown: true)

    let keyUpEvent = CGEvent(
      keyboardEventSource: eventSource,
      virtualKey: CGKeyCode(51),
      keyDown: false)

    let loc = CGEventTapLocation.cghidEventTap


    //Triggers system default accessibility access pop-up
    keyDownEvent?.post(tap: loc)
    keyUpEvent?.post(tap: loc)
  }

My question is essentially if this is allowed in Mac App Store? Because requesting accessibillity permission like this is not allowed in sandbox:

func getPermission() {
AXIsProcessTrustedWithOptions([kAXTrustedCheckOptionPrompt.takeUnretainedValue():true] as CFDictionary). 
}

But I can simulate one short "shift" or "cmd" key press for instance, and trigger the pop-up inside a sandboxed app and get around this it seems. Is this a bug?

I really hope I can release my app in the Mac App Store, but doing so I just want to be sure Im not using any bug that might get removed in the near future.