I am sorry, but I disagree with the notion that Signal has to support any platform, as well as a store version for Windows 10. I have an M1 and don't expect any piece of software to cater to my weird choice in platform (got it for free, nice device, but it has the usual Apple restrictions). Why should any project jump through hoops to support the Windows store? In any case, you are still free to fork or adapt it. A pull request for support still needs review and I don't think anyone has to justify not embracing it. Make a separate project to wrap it into Windows store if you really need that.