Yes well... that depends on the road... I had to cover 12 km (7.5 miles) on roads you could mostly keep moving, that is doable with the broken gizmo.
Personally I would have been inclined to do the trip to Perth, making sure they have the part or can get to it quickly. Where I go, they would give me a petrol 208 for the wait if they had to wait a day or so for the part. But that is just me. I guess I put in the balance the fact that running an EV is considerably lower cost. You are not going to get a lot of money for a car with an issue, so you would need to get it fixed anyway before selling it. Also, cars are expensive now with the chip and supply chain problems... so I'd bite the bullet. Since the part was replaced the car has run like a charm. It is two years
before I need to service it again!! An ID.3 is too expensive for what it is. An ID.4 is better but a significantly higher price bracket. And you may have to wait for it so long that you may regret your decision by the time you have it. A petrol probably makes more sense from a purchase price / wait viewpoint if you know one you can get quickly.
I do understand your reaction. I would not stick with a workplace that has such a poor service and does not care either. I'd move my business to Perth if they were significantly better. Just a thought