It depends on the meaning of amount. By volume no, you can continue to eat like always if you adjust the food itself.
Technically yes, it is a food restriction, but in the end it is especially a calorie restriction which is the important part.
You are absolutely correct though.
You are right with everything you say.
Still the consumption of carbs is too normalized. Many people believe that you should have carbs with every meal which is insane. Just look at any restaurant food, fast food and everywhere. Unless you are dieting you for sure don't have to avoid carbs, but don't seek them out either.
I believe this is the single biggest reason for the obesity problem. Most meals really shouldn't have any added carbs, yet they do.