I don´t know what you are complaining. Most of the visitors of our site are from Japan, many of these perhaps do not know english very well, just look how many thx posts are not even written correctly.
Second: reviewing some posts people often have problems to find the "edit" button, so they may have the same problems with the "thanks" button...
Third: there is no rule prohibiting those thx / ty / thanks post, so mods have no reason to go against it yet, we only delete senseless posts like "up", "011", "012" or such just repeating the name of the actress ment in the post ref to rule #7...
This should be entertainment, it is a long as people do not post for business (some people do though...) or as a reputation hunter, even some people you ment. in your best uploaders thread do...
So what is the problem, a thx post does not hurt anyone nor it is giving any advantage, neither to the thread starter nor for the thx poster...
There are other things causing bigger problems than a simple thx...
And you don´t need to dl a torrent or a DDL to thank someone, some people even write thx posts for just recognizing a post and find it worth to thank for though, so even this seems not to be negative for me in any way...