This right here.

The heyday of RSS is long, long gone. Everything has become a walled garden where platforms want you ON their platform, not reading a feed, or using third-party clients, etc. They want your eyeballs there on their site/service. So many sites don't even offer RSS feeds anymore, and when you get full text, you get piles of ads.

It's the same issue with so many sites/services either shutting down API access or severely restricting it.

I tried really, really hard recently to put together a good list in an RSS reader and tried to make it work. but it just doesn't. It's a miserable experience and you have to fight for every feed you get. It's not worth it. It's sad and extremely frustrating, but unless we can push sites to do a 180 on their strategies, RSS is essentially dead.