Its like the concept of creating your own meaning in life instead of finding it in a world that is largely hostile or indifferent to you is an alien concept to the majority of wannabe "developers" on this site.
That seems a particularly uncharitable way of looking at it.
Some people think BoB contains an interesting system and are interested in seeing if it can apply well to subjects beyond its original focus.
Wanting to do something different with the original concept doesn't mean they don't understand the original concept.
If we follow that line of thought, Avery must be a wannabe "designer" who finds RPGs "an alien concept" since he set out to do something new with them.
I don't think that's a particularly reliable line of thought, do you?