Nitter[0] seems to support it still, although it seems unmaintained - not sure how stable it is by this point. if you self host this, you should probably use burner account tokens, anti-botting measures might decide to shut down your X/twitter account
I just restarted using RSS recently. And I discovered I can also use it to track software releases (on github). The url is the release page with .atom appended. Eg
I hope X/Twitter back to this functionality, but that's a low probability.