So, a few good things about this format (rather than embedded objects):
1) The page is much more cache-friendly. The only thing you have to keep track of for `Last-Modified` headers is the state of the page -- not the state of every single object in the page.
2) It can handle a lot more items in a single page. If an URL is about 256 bytes on average, you can have about 100 or even 200 items in a single page and still have a well-performing payload in the low 10s of kiB ranges.
3) The activities can be cached, too. You might not need to load all of them.
I lean towards big pages with URLs now. See https://tags.pub/user/linux/outbox/5 for an example.
