This doesn’t make sense. Of course you can decide whether to enable Apple Arcade or not. Obviously it’s a paid service, so you have to pay to enable it.
It's a banner on top of settings that has to be forcefully hidden, it's not in the Apple Arcade setting. Many people are explaining to you that if it behaves like an ad and smells like an ad, it's an ad.
I feel that you are either arguing in bad faith, or determined to defend Apple at all costs. I guess when your car manufacturer will start showing you "Enable Entertaining Package Plus for 14$/mo" in your car dashboard, you will be happy, think "of course I can decide whether to enable it or not", and probably feel very clever.
Who is ‘pushing’ you to do anything?