Because not every site has a RSS feed. For example when Claude Sonnet 4.5 released it would make sense to have that, but there is no RSS feed for Anthropic. Being compatible with the entire web instead of just a subset of it is useful.
Well... thanks to walled-garden policy from google whole web decided to erect walls instead of providing neat RSS. Though all websites I care about have RSS and if some doesn't I contact the admin and they add it…
I don't know of any major publisher that doesn't maintain RSS feeds, and this is mostly syndicating major publishers, so I'm not sure it makes any difference
Because not every site has a RSS feed. For example when Claude Sonnet 4.5 released it would make sense to have that, but there is no RSS feed for Anthropic. Being compatible with the entire web instead of just a subset of it is useful.