Photo Stream is gone, there's nothing we can do about it. I liked Photo Stream too, but usage was down (because it was defaulted to off and apparently some couldn't understand how it worked). But it's gone, they're not going to set it up again.
If you really need to see your photos on these, then use Home Sharing on a Mac and share your photos to your devices that way. I've detailed how to do it in my post elsewhere in this thread. You can watch any video and listen to any music on your Apple TV 3rd generation streamed from your home Mac. Home Sharing isn't going anywhere anytime soon because there is no hosting or networking on Apple's part. Plus it's probably the most Privacy respecting solution too because it's on your own network. You still have access to your iTunes Purchases and Apple TV+. Some of the other apps still work too, which to me is surprising.
But with any network based devices, eventually they all will stop working.
If Home Sharing doesn't work for you and you live in an area with ice, you could use it for a nice hockey puck I'm sure and take your slapshot anger out on it.