I have seen both of the posts mentioned in the OP. Text spinner does not work like this. Text spinner will change the entire grammar and rewrite in other words, but the meaning of the post will remain the same. You can copy a post from the forum and try any text spinner to verify what I am saying. A text spinner will change the wording at least 50%, and sometimes it could be more than 70%. In the post which was mentioned in the OP, there are slight changes, and it is less than 10%. So, either he changed the word by himself, or he probably used some tools that changed it automatically.