Emphasis mine. The pressure to live up to the moniker leads us down an insincere path and causes us to sometimes doubt ourselves.
"Shape does not need to be imposed."--Well that's any story paradigm or structure that feels false to you.
Shape is part of what we are listening to--that's the storyform that eventually takes shape as you write from that artistic impulse. Dramatica is not imposed, writers naturally impose Dramatica.