I work in IT, trust me, they arent boxing fans and take a mild interest in sports outside of football, and yes, they are not talking about Wimbledon or Ronaldo. I am based in the North West, in a city with 2 football teams(you can take your pick which one), and they are much more interested in the Premier League than tennis. Most of them didnt have a clue that Rocky Fielding was fighting for a world title at the weekend just gone....make of that what you will...but i term them as casuals.
As for your second point, i havent got a clue, perhaps i should not only listen in to conversations, but also interupt them question where they gained this knowledge......
Someone who is casual, someone who doesnt really watch boxing, the type of people who dont actually know who Canelo or Golovkin are, but are very aware of Joshua due to his media presence in the UK
You have kind of made no sense with this last statement, YES, of course they listen to the bullshit that they get fed...because they are CASUALS and know no better....
Maybe you should try getting out more and actually talking to people outside of a gym....im not exactly sure what your description of casuals seems to be, but it seems we agree on that based on your rambling post