I also upvote some of your posts. I don't discriminate based on how many words you typed. I don't think most other users do it that way either. If we like your content, we'll upvote it.
Besides - it's not the average user that skews the post rewards anyway. And if it's a problem with engagement, well...provide more engaging content. However, we first need to attract more engaging users - which requires the ability to attract users and to retain them.