I use it because platforms are stinky

I don't. I think it would be cool, but I don't really like any of the existing RSS app options out there. If it was built into the browser (with no extensions) and was easy to read the feed and follow new ones, it would become more normalized among people for that convenient alternative to account-based social media feeds. I don't really want to download a new app just to browse the web when my browser is right there

fwiw my rss reader is built into my email client (evolution). I know most people do their email on the web these days but that's how I get around having a dedicated RSS thing.