Great to see this here. I’ve been using EchoFeed (https://echofeed.app) to syndicate articles from my blog to social media (it uses RSS as the feed source). I also recently learned about POSSEparty (https://posseparty.com) which has more options but is self hosted.

RSS most certainly isn’t dead either. I run pagecord.com (indie blogging app) and the majority of traffic is from a huge variety of feed readers.