I would have liked to thank people including you and have in some of my replies but I don't get anything other than the quote icon and text at the top right (or anywhere else). I don't see a thank you link at all.
Oh! This section of the forum has a "thank you" button on the same line as "quote", at least it does for me. The "thank you" button has to be added separately for each forum section and it is possible that some of the newer sections on the forum have not had it added. Was there a particular section that you wanted it added to? I see you have received a thank you yourself.
and that you have been posting in the SM forum. I see a thank you button there for me but my forum view may be different from some people's.