Then the thing gets divided. Some relevant things might be in one place but not the other. That would diminish the issue.
If every topic continues to be discussed here in one long straight line, most of it will be missed. Many people come here but only look at the last page and even only the very last post. Lots of good stuff goes unseen.
Separated topics in a forum based format allows people to more easily find issues that concern them and to more easily contribute to and follow the progress of those issue.
Get over the easy "just keep doing what I've been doing the same way I've always been doing it because I don't have to think about it" mentality and graduate to a better way. 'Thinking' isn't so hard and it isn't painful. The more you do it, the easier it gets.
If people want to continue the discussion there or continue with it here... So be it... No biggie!!
Cheers,
Ghosty