No after the million words are done you don't just start writing fabulously, but speaking from experience after six years of writing I have slogged through more than one million words and if you use that time correctly, learning, improving, getting critiques, editing, revising, learning what works and what doesn't, the learning curb takes off to new highs you could never imagine. It makes all the earlier work look like utter crap. I have tossed four completed novels because they need so much work to be at the current level I am at. I have abandoned a few half written books because my writing ability was increasing faster than I could get them out. Now that I am over that marker, I am writing everything in hand then typing it up so that even if the first round through changes drastically it is much easier to bring it all up to the higher quality when I type it up.
Whether you believe in it and whether it works for you or not well that's your business, but I can vouch for it that it made all the difference for me. You don't look at the stuff your writing as crap and you don't keep a mile post but when you look back and see that pile of words it really does make all the difference in comparing the work then and now. Unless you didn't learn anything along the way.
I've had earlier work published, and mid work published, and later work published, but those first million words pale by far in comparison to my current work.