You need the Kind 01 reference, like this, to ensure that people can respond to your article. Replies to OtherStuff events are extremely buggy and flaky.

If I open this up in Habla.News, I can't post a reply to a reply. Just get errors. Or, I post a reply and it doesn't show up in the list. Just floats around in Nostrspace, wherever. Or I post a reply there, but I can't see that reply in a different long-form client.

Also, content discovery tends to be extremely difficult, for everything except Kind 01. I often can't see articles, from people who are writing to my own relays, or I need to toggle back-n-forth between four clients, to see the article and all replies, and to post a reply.