It’s pretty stupid to introduce ads on the pause screen. Usually I would pause something because I am either:

A) Being interrupted and need to focus on something else like a phone call or a family member talking to me, and wouldn’t be paying attention to the screen anyways.

B) Need to leave to go somewhere else like the fridge for a snack and wouldn’t be paying attention to the screen anyways.

Or

C) Just want to take a break and want to do something else which involves opening another window or program and wouldn’t be paying attention to the window with YouTube open.

In every scenario where I pause YouTube and add playing would not provide any value to the entity paying YouTube to play the ad.

And in every scenario, if an ad began playing when I pause youtube it would cause me to mute my sound and/or turn off my monitor and just cause me to get super annoyed at YouTube or at whatever product is being advertised and how to never buy it ever.