Yeah, they left it ambiguous for a reason. I guess its cause some fans enjoy Appledash, but there's also many who are fans of Rarijack. There's also people who hate the whole shipping idea.
Keeping it ambiguous is a way of pleasing all the fans
They drove Rarijack to the ground while trying to ruin Appledash by changing all potential episodes while making Non-Compete Clause their last episode together