License says you aren't allowed to attempt to derive or reverse engineer the source code. So basically the code is available, but if you look at it you are violating the license.
edit: binaries are under a restrictive license and code is not. So definitely don't use those binaries, as they are likely riddled with telemetry crap that isn't in the open source version.
edit: binaries are under a restrictive license and code is not. So definitely don't use those binaries, as they are likely riddled with telemetry crap that isn't in the open source version.