It's a good article - as someone with two unfinished MS it resonates.
I hate writing when I feel like I am clawing for every word - though that can take less editing - or less obvious editing.
I also like writing at speed and losing myself in the story - but know then that while there may be a series of imaginative leaps there is also going to be a lot of work needed to get out of the swampy bits in between
Sarah