@mhoye @evan
if Bob replies to a post by Alice, they are implictily relinquishing their communication style to the style of Alice, because it is Alice's top level post. Alice "owns" the conversation as top level poster
Bob must consider the implications of that before replying
that solves the problem
the structure of a conversation is beholden to the imperatives of the starter of that conversation. it should not be hijacked
your other concerns are valid
but are overruled in this context