Ikr... my thoughts as well. But the granpa don't know shits ig cuz look at him wanting to send her abroad on the first day they met （￣へ￣）
It depends on the kid's height. If she's tall enough her seat should be designed to face forward. She is a preschooler after all. But definitely a baby or 2 year old are short enough for the backwards style seat. And definitely don't face a seat the wrong way forward for how that particular seat is designed for.
You can be 5 and be rear facing if the size of the seat allows. It's easier to fix a snap in a broken leg that a snapped neck
Keep your child rear facing for as long as possible. Gru could and should be rear facing. Broken legs can heal. Broken skull...not as much