Since I'm one of them, that's a good thing, basically.
After moving to Europe I was at first shocked, like any good American, at how waiters would not race over to the table or would actually be moody at times or not beaming with smiles at the unbelievable pleasure that my arrival gave them.
Now, it seems normal. What seems weird is when I go back to the States. Everyone is fawning all over me, smiling up a storm, positively bubbling over with good will. It's incredibly annoying at times.
What's amusing is how we in the US start focusing in on this need for "service", the over-importance given on what's essentially a performance, a tap-dance, by those serving us dinner.
In Europe the attitude is that both the diner and waiter are humans with full rights, nothing more, nothing less. The American idea that "I can march right over and get you fired at the slightest misstep" is unknown in many places elsewhere, as it should be. A rude customer is not always right, and it's easier to find another customer than a really good waiter.
Anyway. Could say a lot more about that but it's amazing how the perspective shifts. It's just dinner, folks. The person serving it should probably be civil, that's always a nice thing. More than that, and it really gets sort of silly.