I totally agree with your approach, Leonard. I ignore 99% of the "how to succeed on Medium" posts. Personally, most of them are just regurgitating the same old stuff anyway. Like you I am just here as part of my freelance writing. I use HubPages and Medium as my portfolio if a client wants to see examples of my work. I am happy if I make enough here each month to cover my subscription fees. Be yourself, be real and write about what moves you, or concerns you at the time and readers will be attracted to that. I think your stats are proof of that.