Hoi,
With articles it is obvious. The subject matter that will be provided IS what is advertised. This is NOT the case with re-directs. They point to somewhere arbitrary and there is no way to ensure that the redirect remains consistent and fits the subject of the Wikidata item well. This is relatively Obvious with articles.
Personally I doubt there is value in redirects. I find them very Wikipedia centric. Given the examples given, there was no Wikidata in the first place. Harvesting redirects is an exceedingly bad idea that will pollute Wikidata with many items we should not have.
Thanks,
GerardM