The entire 2009 posting by Alex Bayley is provided here. Sumana's response is marked further down. The original Yahoo text is at https://web.archive.org/web/20140916121930/https://developer.yahoo.com/ypatterns/social/people/reputation/competitive.html
At the top it's labeled 'best practice', which is a tell of not actually understanding community building/stewarding.
At the bottom there it mentions Tara Hunt on healthy community, which brings us back to Wenger's work I think. Yahoo was after design patterns here, which make sense as such. I think my issue is that such design choices in a platform tend to be fixed after design and thus can become dominant. The natural flow of a community interaction likely will go in multiple directions over time. Would any such platforms, not the ones mentioned by Yahoo as examples, be ever able to change which design patterns come to the fore? Meaning, built your platform to have all of these available, with the community using a platform able to choose time and place where one of those design patterns is expressed in the platform.
It's a category error to equate the users of a platfom, or worse the platform itself, with a community. A tech company's view is often limited to customer audience, and dubs it community. A person's view starts from within the communities they're already part of: how does a tool support (my role in) my communities? Vgl https://www.zylstra.org/blog/2019/09/on-being-human-tech-and-the-abuse-of-community/