Is there a way to disable _all_ {,unwanted} notifications?

[Linux]

Hi,

the first annoyance is, that I consistently get notifications that "Do not Disturb" is enabled and there seems to be no way to disable those notifications, since it even doesn't show up in "Screentime".

The second annoyance is, that I still get notifications from "Shortcuts", while notifications are disabled by

Settings > Screentime > See All Activity > Day > Notifications > Shortcuts > disable "Allow Notifications".

It automagically gets enabled soon or later.

The Settings menu "Notifications" does not provide to disable "Do not Disturb" or "Shortcuts" notifications at all.

Model name: iPad Pro (12.9-inch) (3rd generation)
Model number: MTFR2FD/A A1876
iPadOS 14.7.1 (18G82)

It happened on iPadOS < 14.7.1, too.

Regards,
Ralf