Unless you also mount some partitions noexec, making things not executable is useless. And if you have access to python/perl/ruby, you can construct any binary in memory anyway. And that's assuming someone's targeting some vulnerability chain which uses the compiler which is a stretch anyway.
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Where does it say on that page that the hardening is not making them world-readable?
Unless you also mount some partitions noexec, making things not executable is useless. And if you have access to python/perl/ruby, you can construct any binary in memory anyway. And that's assuming someone's targeting some vulnerability chain which uses the compiler which is a stretch anyway.