I've always found the any% categories of speed running to be the most interesting, since it often works by manipulating the code of a game to work in really inventive ways.
if you like videos like this, pannenkeok2012 does super in depth analysis of everything Super Mario 64
The contrast between the individual and group level is something I've been thinking about a lot lately.
Your point about the value system is intriguing. In my experience, debate has always been more fulfilling on the individual level, since it feels like the exchange of ideas comes more easily. Trying to expand this to a wider audience takes much more effort like you described.
I think people get frustrated since even if you actually get through to someone and understand their perspective, it doesn't guarantee that person will be open to learning and abandoning their previously held beliefs.
It's difficult to accept that some individuals will never be open to a change of mind, or maybe that the patience required is too much.
if you like videos like this, pannenkeok2012 does super in depth analysis of everything Super Mario 64
https://www.youtube.com/user/pannenkeok2012