You are comparing a managed service running on a server to a locally running app on your computer that somehow malfunctioned?
That's a very apples to oranges comparison. If you want to compare that you'd have to compare it to a service also running on a server like Feedly, Miniflux or any other managed service.
RSS client apps can still connect to managed services, so not sure what you are talking about.
In my case I'm using Reeder and it's just talking to the Miniflux server. So the server keeps all feeds refreshed all the time and the client app just fetches them from there. Just like Email being fetched from the server over IMAP.
That's a very apples to oranges comparison. If you want to compare that you'd have to compare it to a service also running on a server like Feedly, Miniflux or any other managed service.