Tyler, this site is part of the StackExchange network, which is made up of many dozens of sites. Many of these sites have an even more open and discussion-prone nature than ours (Parenthood.SE, Skeptics.SE just to name two examples off the top of my head). Yet, all these sites abide by the policies set by the network. The network is created and optimized for Questions and Answers, not for rants and discussions. StackExchange doesn't just provide communities with a place to hang out and do whatever they like with it, the different sites aren't autonomous. While there's a degree of freedom we enjoy as a site, we all have a "federal government", which lets us use its facilities in exchange for abiding by its rules and serving its business goals. Even if we wanted to make the site open for rants and discussions, it's not up to us to decide.
It also wouldn't be a good place for this, since every bit of UX on SE is tailored to provide an environment of quality Q&A, which is very different from a debate club.
Talking abstractly is not "punishable", it's just not in line with this site. People don't close your questions to teach you to know better, it's not a punitive measure of any kind. It's just meant to keep the site dedicated to its purpose, it's no more than routine maintenance and cleanup.
On a more general note, and following your recent questions here and on the main site: people on this site are thrilled to have newcomers who are enthusiastic and passionate about UX, so it's great that you're here and we'd very much like to keep you here. But take a moment to look around, RTFM, and get the spirit of things. It will give you a much smoother start.
It's awesome that you're suggesting changes, many changes have been implemented on the site specifically following community suggestions like yours. New changes are being implemented daily. But understand that we're part of a much bigger system, which is extremely good at what it does (IMHO). Also, it's totally community-driven, so most things here are the result of much deliberation and discussion.