It is really up to you, how much you want to extort the device. The point of the setpoint is to keep the temperature on that level. If you drive your car, you do not turn on an off the AC, because it keeps on the level what you like. (If you do so, then just please disregard my comments…)
There is no need to set up an extra automation to turn it off. Really, you can track the power usage of the AC in that’s your concern. When it reaches the temperature it just circulates the air to keep the feeling.
In the US, central AC units are running 24/7, but @JDRoberts could tell more how it is really over there.
Otherwise, if I can recall, those Samsung ACs have some filtration system as well, so they do keep the air clean as well. And the model, which I used to have, had a feature called Virus Doctor, which was cleaning with UV light as well.
So, really the point is here, when the AC turns on, after a prolonged off period, it has a huge kick on power usage, and it doesn’t do anything really good to the compressor neither, and the efficiency is not so good at that time neither. It is better to keep it on continuously because it has a built in temperature control. Turn it off when you are not there, or as you set up the door is open. The remote functionality is really for remote shutdown and start. Ie.: Turn off when nobody is in the house/room and you forgot to turn it off. Or before arriving home, turn it on to cool down the room in advance. (During the current heat wave, if temperatures outside 35+, room temperatures can creep up to 40+ or more if windows facing south and no ventilation in the room, and lack of adequate window shading. In those cases a remote start makes a lot of sense when you are heading home from the shop or from work.)