There’s a “don’t allow” button right there. And the message on top of it for “System Permissions” literally says, “you can say no to giving permissions and only certain functions of the app will not work”
I don’t know what the issue is here. You can probably call people through the app, since you sign up with a phone number.
you need to give them your phone number to create an account
for the rest, you can simply select “don’t allow”. That’s why its not really a concern.