> and then WhatsApp starts to send ads in push-notifications that you can't turn off *that you can't filter. Every time an app begs me to enable notifications

> and then WhatsApp starts to send ads in push-notifications that you can't turn off *that you can't filter. Every time an app begs me to enable notifications, I give it the side-eye because I immediately assume it's going to include notifications that I don't want to see, which are essentially ads for some app feature / some part of their walled garden. I want to be able to filter notifications at the OS level. That could be by a substring search on the content of the notification, or by a unique-per-call-site (in the code) identifier included in the API the app uses to surface a notification (though I suspect most apps would just re-use the same identifier everywhere because the developers don't want me to be able to filter their ads).