Forced to allow automatic updates? So I wanted to stop the Play Store from automatically updating only to find that this is literally not an option.

My version of Play Store is 8.1.73 and when in settings I press the "auto-update" fields I get the option to update over wi-fi or also over data.
What happened here? Did Google just sneakily remove the option to not auto-update? Is it a OnePlus "feature"?

I have a OnePlus 5 with the latest update for Oxygen OS for my region (Europe) installed.
Check out in the settings tab of google play store, there you'll find 'Auto Update Apps. There are three options,
Do not auto-update apps,
Auto-update apps at any time. Data charges may apply,
Auto-update apps over Wi-Fi only.
So you can make auto update off.