SV are fake open world games. They don't force you to do things in the "intended order", but there very clearly is an intended order indicated by the levels and the unlocking of overworld traversal abilities. Compare this to a real open world game like Breath of the Wild, which gives you everything you need to traverse the world at the start.

This isn't a game that was designed to be open world, it was designed like any other Pokemon game and had an open world that adds nothing to the experience tacked on. Open world games need to be designed with the open world in mind. Otherwise, it's just a bunch of empty time wasting space