I can see what you’re getting at, but that doesn’t necessarily help speed up Sponge’s development. Yes people planning to port plugins is great and will help the transition but that’s only after Sponge is finished. Heck, some may argue and say we already have a good community. It’s not perfect of course but few communities of this size rarely are.
That’s a little unrealistic but I’ll assume you don’t mean it literally. Some may argue (including myself) that discussing other project’s pros and cons actually will help out since it exposes the community to other projects that they have never heard about and, as @Felix3008 put it, see what if they have different/better techniques that could be used on Sponge. Or even a server to use until Sponge is ready for release! Heck, I would’ve never even heard of Husk or Rainbow without people talking about it. Yes people may be rude but you get that in every community and as long as they aren’t flaming anyone it’s allowed.
And I’m not sure if I understand what you mean by a post being a part of the work. For example, would something like this game be considered work since it brings people together and supports them in a way? Or would it be a waste of time since it’s not doing anything productive?
But I digress
My point was, threads like this or the one I linked above would have almost no effect on commits the github if any at all. Even if it turned into a full crapslinging contest I can only see it damaging the community’s standing to other people in the long run rather than taking up people’s time or delaying the project’s release.
Of course you could argue “what if someone who could’ve helped the project out got insulted by people were discussing another project’s cons” or “what if Sponge doesn’t get as much support as it could because the community wasn’t working as hard to make it popular” but those are just vague possibilities that may or may not happen.
At the end of the day, all this is is a online community and we can’t expect for there not to be a handful of problems with how people act. In a perfect world yes but this isn’t it and to be honest it’s better than a lot of others.