That list is not correct for Europe/Southern Europe at least.
Nobody expects anything. The most tipping is done by rounding up. You have a 1.8 euro bill for coffee, you leave 2 euro.
The biggest difference between NA and Europe is that in NA a lot of people work for tips, as in, they're going to try to service you to get them. This is not the way it works in Europe, waiters do appreciate tips especially in places that have lower purchasing power, they will take your order, bring your food, bring your bill, and be on disposal if you want to call them anytime, but they're not going to try to look outgoing and approachable and hassle you with "is everything ok" questions for better tip.
Not true; tipping is everywhere, however it's more that it's appreciated instead of expected elsewhere, see https://www.johnlewisfinance.com/currency/tipping-culture-ti...