Make it even simpler. If the website is installed as a Web App on your iPhone home screen (it has an icon), it can ask for and send notifications. It appears in your list of apps in notifications in Settings and can be fine-tuned that way.
You remove it from your home screen and the notification permission disappears.
The bugs related to notifications currently seen in the beta are due to this user interaction not yet being implemented I'd bet.
You remove it from your home screen and the notification permission disappears.
The bugs related to notifications currently seen in the beta are due to this user interaction not yet being implemented I'd bet.