Unfortunately, as far as I can tell, it is. I looked at the blog page in the dev tools, and see this where the Discourse comments go:
showing a discourseEmbedUrl parameter in the script of
https://eldraeverse.com/2024/10/28/spooooky/
and on the Discourse topic, I’m seeing that same URL both in the link at the top of the topic, and in the “Originally published at:” insert into the first topic post. (Not sure if there’s somewhere else specific I should be looking in Discourse for the original embed record, but everything I can see in the topic itself matches.)
Edit: To clarify, I was previously using the WP Discourse plugin, and as that isn’t configured using the embedding config on Discourse, I can’t just go and look at the old setting, unfortunately. But I made sure all the topic-page URLs on the new Ghost blog wouldn’t change from the WordPress blog, so everything should be the same automatically.