I believe it is. You sit down at a table, your order what you want, you get it brought to you. Thats pretty much it. Unless in the menu they state they are supposed to be cheerful, stop by X amount of times to check in, etc.
QFT but this scales.
At anything less than $15-20 per plate, you probably will need to call for a server. They will hopefully 'check' on you once during a regular meal time.
Due to most here already bitching about food costs being too high (and in the last 5 years restaurants have been crushed by their own costs. In the 90's almost all restaurants piled on the food for low plate costs..today they can't their costs have risen by 5x in that timeframe, recently many things have doubled...it's all wrapped into fuel costs sadly), the restaurants due the only things they can...cut portions and cut staff.
In the end at the typical 'cattle car' places like TGIF, Applebees, etc you have a waiter maybe handling 10 tables on his own and possibly sharing another 5 due to someone calling in sick.
It's not the restaurant's fault, it's the consumers that decide to pay at that level.
I don't eat at those types of places on any busy night and never if I can help it.
I prefer to end up with a meal cost of $50+ for my wife and I prior to any drinks, appetizers or desserts. I get a less crowded venue, usually only a few kids that are well-behaved, no one on their cell phones calling all their homies that owe them money, and a waitstaff responsible for 4-5 tables scaling to having multiple dedicated waiters at higher plate costs.
It's sad the entitlement everyone has today.