I don't think the information in that link is reliable. I can't speak for most countries, but for Australia it's just wrong. No tipping is ever expected here in any circumstances.
Yes, exactly the same in NZ, no tipping is ever expected here in any circumstances. That link is exactly the kind of rubbish we can do without. To quote directly from that page they admit directly "tipping has spread "because Americans forced it on people."". Please stop it, seriously! I had to laugh at the suggestion you would tip a taxi driver in NZ. I have yet to find another country with taxi fares as high as NZ. A ride from Auckland airport to the CBD is about 20minutes but will set you back an easy NZD $100 and they are suggesting you give them more! No wonder Uber is doing well here.