Q: Leaving the AC ON when switching the engine ON and OFF

In the old days my father used to tell me that it's highly recommended to turn OFF the AC before switching OFF the car engine. He also told me that when I get into the car I have to wait for 60 sec before turning ON the AC.

However, nowadays I notice that there are lots of people who keep their AC Switch ON at all times; when they start the car, the AC will immediately start and goes OFF only when they switch OFF the engine.

My Camaro is a 2015 RS 3.6 V6 and has a remote start/stop key feature from distance. I use this feature most of the time. However the AC won't start unless I keep the AC switch ON.

My question: Is it ok to keep th AC switch ON at all times? Is it alright to switch the engine ON and OFF while the AC is always ON?

Kindly advise if this has any disadvantages

Thanks,

JC

My car has 16000 miles.
My car has an automatic transmission.