Honestly, noobs don;t always understand reasons for things. For example, on Facebook liking your own posts helps the algorithms reach more people, so, it's not unreasonable for someone used to Facebook to assume that may be the case here. When I first joined, most of the comments I got were along the lines of "Followed you please follow me too" - so, I assumed that was the way to reach people. Turns out, it wasn't lol