zlacker

Yea, I dont follow ppl on twitter anymore, but you can use nitter to turn any user into a rss feed.

For subreddit you can use redlib which has rss feeds, example https://redlib.zaggy.nl/r/insects.rss

Using this as a source, you can combine a bunch of subreddits you like to follow into a single feed for minimal usage effort.

Since you are processing the feeds by now, it is trivial to filter out crap you dont want, such as Musk news.