I understand what you are saying and I see the merit of having more content to a thank you post, but if it is not there is that in and of itself a warrant for a down vote? Sure you want more and more is sometimes great, but there is still a lot of substance in a simply 'Thank you' to be had. While the comment definitely does not merit an up vote, neither does it warrant a down vote. I would almost hazard to say that you no longer appreciate the value of the thanks itself and simply see it as a customary response that after being used so many times, no longer has any meaning. I see that you want "Thanks, (and here's why)" but what exactly are you worried about with having a few thank you posts?