my favorite thing about this post is that a handful of people have gone "oh wait! this is tangible proof that i don't need to be embarrassed about leaving a lot of comments!! i'll stop being so ashamed!" YES!! ao3 authors basically universally will die for people who comment spam. we love to see it and we do not find you weird or annoying At All.
think about it this way: we ourselves are weird enough to have spent several hours, days, or Months writing down this story. we are weird enough about the content to do that! why on Earth would we be mean and judgmental toward people who care enough to get excited about reading it?? we shared it Specifically For You To Get Excited About!