Sometimes a short article will still generate a lot of shares or comments, which does affect placement.
Google will crawl your website as soon as it is live.32.
Great Content Always Ranks Well: Writing good content helps, but relevant backlinks and user experience are required as well.
My finding is that it doesn't matter if you use a subdomain or subfolder if you start fresh website or blog.
But you should not move your established website on a subdomain.
Great content paired with authority backlinks, on the other hand, is a recipe for success..