Just speaking for myself here, I find the discussions on training make the most sense when they focus on things that rank and file people can be taught to do reliably on their own. But it's also useful to use famous people as examples, because we can all easily see them executing the techniques.
So, that said, it makes sense that the UFC (or boxing, or other similar things) are used, because we can just pull up the footage and see the same thing. But those examples are only really useful in the context of showing a high level, high pressure instance of something we can all learn to do if we train in a practical way.
Absent common, easily viewed examples, these discussions quickly devolve into "what ifs" and "yeah buts". I hope that makes some sense... I'm multitasking, which is something I don't do well.