Well, posting them at the beginning of the thread makes it a lot easier to check them all, because they are in one place. That's especially useful for cards like Travellers or other cards that rely on each other. However, posting them ONLY THERE will not update the thread, which means people will not notice you made changes. So posting it both there and in a new post (as you did) is very useful.
Also you made some statements earlier about not wanting to change your cards anymore, and that people who don't like your cards should just ignore them. That's fine, you don't have to listen to suggestions. As you said, they are your cards. But people here are usually posting in threads like these to help you improve your cards. You made it seem like you don't want them to do that, and so they stopped doing it.
For instance, I could tell you that Sellsword is written in one word, and that Hedge Knight and Supply should be written with capital letters. Also, looking through other players' discard piles to find the two worst cards to put on their deck, and then decide the order, may take very long. It also means that some players might use this opportunity to count the points in their discard pile, in order to see whether they are in the lead. That will make it take even longer. Additionally, you don't have to mention "if they have a discard pile", because in Dominion you can just tell people to do something, and if it can't be done, they just don't do it.
The question is, do you want this kind of reply?