I like the "sham" bit.
Why watch QT? Well research for your doctoral thesis on how free societies transition (have I got the back-formation right?) into tyrannies while preserving the illusions of liberty.
It's a propaganda effort, a gradual (though obviously not necessarily slow) process, like heating up the water one degree at a time to stop the frog jumping out of the pot before it's boiled.
QT is a sham debate. In the real world there's a spread of opinion, let's say A thru E, where A and E might be considered extreme. The QT "representative" panel has one A, three varieties of B and one C (very occasionally a D), is moderated by a B with an audience of As and Bs, usually no Cs or Ds, but one E for comic effect.
The pervasive repetition of this tendentious selective and editorial process, employed by all the main media, is imposing the view that the only intelligent and moral positions to be taken on issues like Brexit or mass immigration belong in the A and B camps, and that those who think differently (that's about half the population ) are "losers" to be pitied or "deplorables" to be despised.