I've made 4 and replied on them 22 times. I actually haven't made any threads here yet for whatever reason, despite doing so on other forum-like sites before.
Though yeah, the last one I made I noticed the replies weren't getting properly federated to the 2 users (on lesser-known, more mastodon-type instances) I was trying to reply to (they saw it and replied, but I could only see this on their instances).