[razemio]

This would mean, that every app notification needs to contact a different server. Lets say you have 20 Apps that send notifications. 20 different connections would work in the background to fetch updates instead of 1.

Privacy vise this is an issue and the reason that messangers like signal and matrix would use their own services on android. However this reduced battery runtime by a good margin and android and ios get more aggressiv at killing background tasks each os iteration.

To make things worse, push notifications for matrix and signal where unrealiable, because manufacturers like oneplus, oppo and some others where killing all the background tasks against specification to win the influencer battery tests.