It took me awhile, but I have figured out Tuco is a guy who likes to to argue for the sake of arguing. He is the type of person if someone said the sky is blue he would turn it into an argument saying, "well actually the sky isn't always blue, sometimes it can be many different shades of blue, pink orange, purple, red, green, black. " He very well could agree with someone, but he will still find a way to turn it into an argument/ discussion. He also loves getting the last word in, for any discussion or conversation.
When people keep responding to his endless drivel he eats it up. I could be way wrong, while his endless arguing is very annoying I don't think he means any disrespect or intends it to be personal. Although much of the time that is the way he comes across. I have put him on block just because I got tired of reading all his arguing with me and everyone else.