Wait, Amethyst has push notifications??
This is a good time to mention that there is https://unifiedpush.org/ and that it is supported by #Amethyst, #Element, #SchildiChat, #Tusky, #Fedilab, and other open source #mobile apps.
If you care about this data collection, #OptOut of #centralized push notifications where you can.
Discussion
Apparently. I turn all that off for all my social media, but I see Amethyst show up as registered with my UnifiedPush app.