The XP made on the first post was at like 22++ with 8-- down votes. So this got me to wonder who are those other 8 down voters that did not post a comment but only voted down.

As of the moment of writing, said article has 20++ votes, 10-- votes, and only 2 direct replies. And for some reason you feel enraged there have been people voting your post down without leaving a reply. Yet there have been more people voting your post up who did not leave a reply.

Why don't people wonder about them? Why is it you feel that "down" voters ought to post a reason, just you're happy to to collect plus votes without people explaining why they up voted? Doesn't that seem odd to you?