I don't understand your criticism, but I'll try to answer as best I can.
CelticsBlog is part of the SB Network, so occasionally, the "front page" will feature articles about other teams, especially if they might be interesting to Celtics fans. The vast majority of the content is Celtics-related.
The forums are different. We don't share them with any other blogs; they're entirely unique to CelticsBlog. Within the forums, we've got a bunch of separate forums, like Celtics Talk, Around The NBA, etc. There isn't a hierarchy in terms of what topics are "worthy" or anything like that. Rather, it's just a way to keep things organized. So, if something is in Celtics Talk, it's because it's primarily related to the current Celtics team or the direction of the franchise, etc. If you're talking about former players who are still in the NBA, or just discussing another team entirely, that would go in the Around The NBA forum. It's all hosted here on CelticsBlog, though; it's not like we're shipping that conversation to another blog.
So, I don't understand the criticism about being second class citizens or the claim of an inequality. I'm happy to help explain and/or correct any concerns that you have, though.