Thread content showing up in ONE AT A TIME in parent channel

One of the primary values I see of threads is that it allows the parent channel to NOT SEE the content in the thread.  An example of this is: a thread is used to discuss spoilers for a movie, without having to "redact and give context" for EVERY message.  Unfortunately, this is currently IMPOSSIBLE with the initial threading implementation because the parent channel sees part of EVERY line in the thread ONE AT A TIME.

Please either just remove the "one line from thread" interface, or make it optional/configurable so what is said in a thread stays in the thread!