If you want to reduce your reliance on Twitter, consider RSS. In a way, RSS feeds are what Twitter ought to be: a reverse chronological list containing only content that you chose to follow. (Indeed, Twitter had RSS feeds until 2012.) Below is a list of some RSS feeds that might be useful to Apple developers and others with a strong interest in Apple. Many other sites also have RSS feeds, though it's not always clear where they are, so you may have to dig to find them. And if you run a site yourself, please provide RSS support, otherwise your site may be totally dependent on Twitter.
From https://xcodereleases.com (not affiliated with Apple). An earlier version of this blog post incorrectly said there was no RSS feed. I apologize for the error!
You can get an RSS feed from a GitHub commits URL by adding .atom at the end.
There's a list of HN feeds at https://hnrss.github.io/
As documented by https://www.reddit.com/wiki/rss/, you can get an RSS feed from a Reddit URL by adding /.rss at the end.