Should non-OSS licenses and associated source be stripped by prep-source-build.sh?

This issue stems from a discussion in https://github.com/dotnet/sdk/pull/44828.

The VMR contains source to build the Windows installers. In some cases there are non-OSS licenses included in the VMR for these installers. Currently these licenses have to be special cased when scanning the source for non-OSS licenses - e.g. https://github.com/dotnet/sdk/blob/262b9c3d6cf67287f649e38d83e6c5d9d08feb8a/src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.Tests/assets/LicenseScanTests/LicenseExclusions.txt#L144. This adds a tax for each distro maintainer who scans the source before building around analyzing and ensuring the source is not part of the source built product. To provide a better UX, should the prep-source-build.sh strip these licenses and the associated source similar to how binaries are stripped today?