Yes I think of it as a response being a valid piece of content. For example if you recorded the above message in audio and I wanted to respond after your first paragraph then my response maybe:

[context] (your audio) "adding to conversation isn't part of canon content."

(my audio) "I disagree I think adding to the conversation can be just as valuable especially if content is filtered correctly meaning you'd only see comments from people you followed"

Something like that. But yes I do agree this is a huge issue and basically if it can't be solved then the app will fail.

I think the use case won't be to replace a typical podcaster but imagine if we're both in a group and discussing a podcast on the podcast - that's more how I see it