Jesus! Why is there a presenter? Why isn't it just a livestream of the mission control radio chatter? That sort of shit belongs on some 24/7 news broadcast.

Same reason the livestream mentioned jobs about a dozen times in the 10 minutes I watched, NASA is in a fraught position and this is their way of fighting for some continued funding. A 'mass media' event captures more attention than a minimalist stream of chatter. (And a less cynical interpretation is also that getting the public interested in and engaged with space missions is part of their mandate.)