I don't think AT&T should be sponsoring the show.
I have many times bought items that linus have recomended trough ads, because he has said that he only endorses products that he wolud also recomend if they had not sponsored him. By beeing sponsored by AT&T it does not only make it less likely that i will buy products he indorses in the future it questions his credibility. This incident shows that he is more foucused on creating a big company with high production values (like his highly viewed build guides) and low respect for its audice than a good company with a large respect for its audince (like the WAN show) and lower production values.