Nice deep dive. On a tangential point: nowadays Turbo Streams are less needed in Rails, because of the way Turbo automatically kicks in by default. And in most (not all) situations, backend doesn't really save much time returning a piece of a page vs a full page, since in most backends preparing data for response takes 10s of milliseconds. So might as well just stick with default, unless you know that you specifically need to serve some granular change. While learning this stuff, I wrote a little FAQ (where I was the frequent asker of questions) that clarifies some things: https://notes.max.engineer/turbo-8-faq