I am new here, but I know Twitter and Instagram quite well. I know on those platforms some people build followers by following people, they then unfollow them. Such people are scum, and it is with great pleasure that I go through my lists and kick off people that I only followed as a courtesy.
On Wattpad, I follow every writer who follows me, partly as a courtesy, partly because I assume they are actually interested in my stories and so may write things I would in turn be interested in. At the moment I am not concerned with followers in Wattpad, I care about people who want to read my stories, and I am new so I only have a few followers.