Ok I will share some of my insight. Sorry for plugging a different game here but it is needed for the comparison.
I am a avid player, and sometimes streamer of the biggest crowdfunded game/kickstarter game in history, Star Citizen. Star Citizen thrives on streamers and word of mouth to get the game spread through the interwebs. It is a open alpha game currently, same as this. When they release new patches they have it set up in a certain way which you currently are close to. They have their internal team, the first wave of testers (like your external QA team) 2nd wave of testers (mostly those who forked out the most money or has been apart of it the longest) and then the 3rd wave of testers (streamers and hardcore players) before releasing each patch to the public. Now the first wave is to make sure there are no game breaking bugs, and if they are what are they doing to break the game/system. Highest risk since it has the potential to brick a PC. And the first wave of public QA testers are the only ones that cant say anything. Once it hits the 2nd wave of public backer testing its wide open, because they use streamers and hardcore gamers to showcase what they are working on, improvements they are making, and stress testing the game/servers which just adds more fuel to the hype fire. The more people see a object become shinier and more fun to play with the more people say, that looks great I want to try it. Hell I backed this game from watching JackSepticEye play it on his youtube channel and thought hey this looks like a new Black and White meets Spore, you get to play god then colonize other planets THATS AWESOME!! I was hooked. Your public appearance is what draws people in, so allowing us to blab about it and show people look at this shiny new toy, or mechanic, or chaos. For a kickstarter game this is pretty crucial, because your public appearance and how people see you and your game development being open to them since they are funding your creation.
Side edit, the pushing the discord for the main source of feedback and communication is lackluster to say the least. The biggest CF games use forums and "ON SITE" (website) chat to communicate. I get a lot of people are migrating to discord because the voice feature but that is a more public forum for communication and not a local one that can easily be overrun and misled by people who have yet to back the game, or even test/play it. Forums are hands down the best for people who really care about communicating with the dev team as well as other gamers sharing the same issues or thoughts. Also, moving the main announcements from the forums of updates and patch notes to discord and twitter shows us that you are caring less about what we think and say, even though we have been giving the most support. It shows you want to show off to the open public what you are adding, or what they think you should add before asking the people who have been providing feedback and communicating with your team the issues here, which can make it muddled, because people who have yet to play the game can say ohh that sounds cool I want to see that even if it doesn't fit or isn't necessary for the game.
Just like currently I have some kind of issue with this game where I can't play the game for more that 15 minutes before the game crashes and resets my computer, which kills the stream and any kind of movement I had going to showcase it. And, this bug has been shrugged off on me like I was doing something wrong. This is a game ending bug for me that makes the game unplayable in its current state, and now I cant play it until your next release in August. It's terrible. I have been keenly invested in how this game progresses, putting input on broken AI, flawed systems, game ending bugs and crashes, and contributing to polls and questions presented in these forums.