Well said; this is also answerable by mentally substituting
- I need lots of threads
with
- I need lots of related topics
Which is absolutely supported and even encouraged in Discourse. Want 20 different tangents? Branch off 20 related topics and have at it.
The difference is that topics have unique URLs and titles that help people find what they are looking for. Heavily threaded conversations in comparison are like an unsearchable, chaotic ball of spaghetti.