Not quite. If you want cool air and the system mode is cool, you can control how cool.
And if you want warm air and the system mode is heat, you can control how warm.
Otherwise, theater may indeed be a good way to describe it.
@Aloha 1 you probably already know this, so for other folks reading this thread - don't forget your cabin steward can swap out bedding for a lighter or heavier duvet as you wish, which could help.
Or you could nap on your balcony lol!