I suspect the "less safe option" comment wasn't meant to say that running as root is better than using sudo, but rather was an attempt to scare the user away from wanting to do a system-wide install at all. (i.e., "running as root or using sudo is less safe than a local-lib install") Because the current fad is to treat the system perl as if it's made of plutonium and should never be approached or touched in any way at all.