A new radio series called Unreal: A Critical History of Reality TV may be of interest to you. All episodes are available on the BBC website:
https://www.bbc.co.uk/programmes/p0c5w0zm
There are 10 episodes which are each just under an hour long and there's a 5 minute introduction episode as well.
The first episode is on Big Brother.
The episodes do carry a warning about very strong language.
I haven't listened to any of the series as it's of zero interest to me.