[kuschku]

Actually, yes. I want that the user is able to force a page to do whatever the user wants, if they choose to do so.

Just like my browser blocks popups, and my browser blocks those sites that try to prevent right-click, and my browser blocks those sites that spawn dialogs when you try to leave them, Just in the same way I want my browser to force websites to allow PiP.

[annnnd]

I agree with you, but that is probably something that belongs to a plugin.

[kuschku]

Which Chrome for Android does not support.

[AndrewDucker]

Then use Firefox for Android.