Mavens and moderators aren’t employees, so we wouldn’t really know any better than anyone else. Having said that – I think basically any event-based notifications are reliant on the cloud to some extent, right? Even if you have a smart home hub of some sort, I don’t think notifications happen over LAN, do they?
As for viewing on a PC, I think it’s probably a combination of resource allocation and security concerns. It’s definitely a popular wishlist item, though. You should vote for it here if you haven’t.