nostr:npub1sn0rtcjcf543gj4wsg7fa59s700d5ztys5ctj0g69g2x6802npjqhjjtws has this feature, but honestly, when I try to listen to the article I don't hear anything and it doesn't appear to be actually playing.
Discussion
I also would love for long notes clients to have this read aloud feature; it would make them a bit more like Substack.