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/PerfectDark@lemmy.world.xml otel.kind="server" request_id=7991f179-8c64-43cb-8eba-0247d85cef70\n at src/root_span_builder.rs:16'