A fully isolated setup can certainly provide good privacy. A key benefit of Privastead is that it can send the videos to your smartphone remotely using a strong (MLS-based) end-to-end encryption.
Privastead does not currently send thumbnails as part of the notifications. Performing proper end-to-end encryption on data in push notifications is a bit tricky and I haven't solved that yet. I do have some ideas on how to make that happen though. Once I do, I plan to add thumbnails to push notifications as well.
And thanks for the pointer on Pushover. I'll check it out to see if it can be a replacement for Google FCM.
Privastead does not currently send thumbnails as part of the notifications. Performing proper end-to-end encryption on data in push notifications is a bit tricky and I haven't solved that yet. I do have some ideas on how to make that happen though. Once I do, I plan to add thumbnails to push notifications as well.
And thanks for the pointer on Pushover. I'll check it out to see if it can be a replacement for Google FCM.