You are less charitable than me. Maybe I'll adopt your approach. I first give an app the benefit of the doubt and go into the apps notification preferences and see if I can fine-tune their notifications. If not, off for all at the OS-level. If yes, I tweak it, but if I get surprised by one later, off for all at the OS-level or uninstall. It's especially annoying because I don't have notifications shown on my home screen and need to unlock with a pin so if I go through the trouble of unlocking my phone to spam and I extra annoyed with the app.
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You are less charitable than me. Maybe I'll adopt your approach. I first give an app the benefit of the doubt and go into the apps notification preferences and see if I can fine-tune their notifications. If not, off for all at the OS-level. If yes, I tweak it, but if I get surprised by one later, off for all at the OS-level or uninstall. It's especially annoying because I don't have notifications shown on my home screen and need to unlock with a pin so if I go through the trouble of unlocking my phone to spam and I extra annoyed with the app.