For SSH: https://github.com/PowerShell/Win32-OpenSSH/wiki/Install-Win...

For "unix", you can actually run linux on windows now: https://msdn.microsoft.com/en-us/commandline/wsl/install_gui...

If you want to use windows store, it acts like any other walled garden store regarding "binary blobs", but personally I have never used this. The only software I have in windows is Steam which acts like an "app store" for games.

Now, I use Linux almost exclusively (there are one or two games I boot my gaming machine to windows to play), but it's actually gotten better over the years, not worse.

Just remember to block all the telemetry stuff in your firewall. https://github.com/crazy-max/WindowsSpyBlocker