I would've thought they install licence plate frames when they put the cars out on display, though I do find the idea of dealerships running around randomly mounting them to other people's cars amusing.
I don't think that's a good example.
The answer is simple: there is no "correct" way to enjoy art. Anyone saying vinyl is higher quality than digital is deluding themselves, but that doesn't make vinyl a worse way to listen to music.
It's more convenient to beat a video game on easy, and yet, many people find greater satisfaction in playing harder difficulties. It depends on how you would rather spend your time.
According to the attorney-general's department, these are the criteria.
I don't think this protest causes harm, serious damage, a public safety risk, or serious interference to critical infrastructure, so it's not terrorism by Australian law.