As for the downsides, updates are currently a large download because of a limitation with ostree(which manages updates) that's being worked on. They shouldn't take more disk space though because you only keep two system deployments by default.
bazzite uses rpm-ostree but the distribution method is native containers which deltas aren't really working for right now, so you end up basically redownloading the whole system on updates
Downloading bazzite now for my steam deck oled. Can't wait. good thing steam backs up all my saves so Im not worried about redownloading my games. 1GB download speeds lol
I'm wondering if this is just a me issue or if there's just a big ratio of oled users to lcd users that are unaffected by this #Steam deck LCD July 3rd update is buggy