Edit: This is effectively solved by this browser plugin I found that lets me swap instances with a single click. It turns out there is no way to make an RSS feed for remote users between instances, so this is a close 2nd in terms of convenience.
For example: I want to follow this user's posts because they post regular hand-crafted news posts. The RSS link noted in the screenshot gives me this error pasted at the end of this post.
I tried going to lemmy.world and their RSS feed button works, but I don't want the .world link in my RSS feed, as I want to comment on the post sometimes. Is there any way to get the blahaj.zone user RSS feed working for non-blahaj.zone users?
Thanks in advance.
The error (in .json format):
'CouldntFindPerson: CouldntFindPerson\n 0: lemmy_routes::feeds::get_feed_user\n at crates/routes/src/feeds.rs:254\n 1: lemmy_routes::feeds::get_feed\n at crates/routes/src/feeds.rs:193\n 2: lemmy_server::root_span_builder::HTTP request\n with http.method=GET http.scheme="https" http.host=lemmy.blahaj.zone http.target=/feeds/u/[email protected] otel.kind="server" request_id=7991f179-8c64-43cb-8eba-0247d85cef70\n at src/root_span_builder.rs:16'
Hm, that could work. As it works now, my RSS app actually displays the entire post's content in the RSS app itself, and I fear the lemmyverse redirect might give it some trouble in doing that. However, simply reading it in my RSS app, it doesn't actually matter what source it comes from, but following it should lead me to my home instance, so I may be able to leave the .world URL in RSS if I can find a way to automatically redirect after I click to my home instance. (Or if a 2nd link was to be shown in my RSS app alongside it, which might be possible with enough duct tape)
Either way, I didn't know about lemmyverse, and this will prove very helpful outside of this problem too, so thank you!
Edit: After realizing something like lemmyverse.link could help, I also found this project which lets me easily swap instances with a single click. This is probably as close as I'm going to get to solving the problem short of magically making the RSS feed show remote users, so this problem is effectively solved. Thanks for your help!