What people mostly know is about needs and wants. So, we have to spend our money with the needs first before going with the wants. And the luxuries that you've mentioned is better if it's said as wants. Because that's indeed what we have to spend sometimes to give ourselves the luxuries of having a job and why we work for it. We provide but we also need to provide for our own happiness. If things such as what we like to have makes us happy, we shouldn't deprive ourselves with it because as long as we are paying the bills, we provide food to the table, we deserve that kind treat to ourselves.
Just like what OP has mentioned, luxuries do not need to be expensive. So it’s never wrong to include luxury in our expenses especially if we also deserve some kind of luxury as a reward of our hard work and efforts that have paid off.
However, we should still prioritize saving over luxury. And most of all, we should fulfill all our needs first prior to acquiring some of our wants. Self-discipline is a must, without it, you will never achieve something from your own money or income.