My family are all taking photos on their own devices during a vacation, holiday, gathering, etc. and then someone creates a shared Album on Photos (iOS) where everyone just dumps all the photos taken. It's a complete mess in my opinion. WE have a shared album "Christmas 2018", "Holidays 2019", "Xmas'20", etc. depending on who named it.
Everyone else seems to like the ease of upload and ability to find past pictures. Getting the photos out of the apple app seems like a pain to me. I feel like there has to be a better way, but it has to work for the lowest common denominator (Grandparents, etc).
We have a couple people on Android and are essentially cut off from the family photo stream. When that happens everyone's mentality is, "get an iPhone".