I don't think it's fair to say 'I came out of nowhere'. If you look at my Steem account you'll see I joined May 2016 and have posted almost every day since then totaling 1226 posts.
If you look at the 'about' tab on my YouTube channel, you'll also see I've been doing this daily since May 2016 https://www.youtube.com/channel/UCLnQ34ZBSjy2JQjeRudFEDw/about