Good to know, but I think I'll need to develop the questions a bit to explain my expectations.

1. On most of the other Fediverse apps I've used (Mastodon, Akkoma, Iceshrimp), Lemmy threads are not actually threaded on the home timeline, instead showing every single individual reply as a separate repost. Friendica does manage threads properly, showing the original post and its replies as a single group. Does WAFRN do the former or the latter?
2. I could technically use a RSS-to-AP bridge, but in my particular case it would almost certainly be considered an abuse of the terms of service: I use RSS feeds to follow YouTube channels, over 1500 of them to be exact. Even if I spun my own local bridge server, that would mean 1500 local accounts to manually generate and follow from my main account just for the sake of notifications. Add 1500 more of those if the software doesn't support Bluesky natively and I need to follow their RSS feeds instead.