Are there any community patches for this since microsoft has failed to patch what appears to be a 0 day (especially for windows 10)?
The underlying argument injection in LocalBridge.exe (which is the binary processing the JSON payload) is still present, which can be exploited to open other office apps with injected command line arguments. Someone might find another way to run arbitrary code using command line switches other than --gpu-launcher
Teams is not default in Windows (at least my install) - I don't have it and when I have to do meetings in Teams and I am on my Windows machine I just open the meeting in Chrome.
If you don't have Teams yet, you are either in another rollout, you have done something to prevent it or your PC is managed by someone who have prevented it somehow. I think that covers all.
As for why I only use Windows now and then and since I have had a habit of supporting others I keep my personal Windows PCs as plain as possible so I can see what others suffer (obviously I remove nagware like McAfee and make sure spyware like Chrome isn't set as default browser but I have gone as far as to voluntarily run my PC with Norwegian language).
It is a bit tongue in cheek (since I am Norwegian) but only a bit since it is an extra hassle to try to mentally translate what translaters read in English when they created the unsearchable phrases that show up in a localized Windows version.