As others have stated, plenty of websites have RSS feeds.
I've been able to find RSS feeds for all the podcasts I listen to.
It's just a bit clunky to find. You need the channel id which you can find in the page source somewhere.
Note that this is a regular rss, not podcast rss.
Still get all of my podcasts via RSS. Several dozen.
It’s a bit of a mixed bag though - whilst some big websites still have an RSS feed, you can’t get the full article text, smaller blogs etc seem to be better in that regard.
Finding content is the issue. Unless I go directly to each site every day and scan for new articles I'm likely to miss them. If not for aggregators and RSS how else would this be accomplished?
That's a stretch.
https://www.vice.com/en/article/the-rise-and-demise-of-rss/
https://trends.google.com/trends/explore?date=all&geo=US&q=r...
arguing that RSS is dead because the average person doesn't understand it is like saying HTTP's dead for the same reason. neither are dead: we've just abstracted them to the point that they're no longer the front-facing part of any interaction.
And for sites that don't you can make your own feeds by selecting links on pages (such as how AP News doesn't have an RSS feed).