He was there as they were and found ways to move things forward. Have we gotten better since? Of course. Did they also make some claims that seem silly in retrospect? You betcha
You want to live in a world of pantomime villains its your choice but reality and history is much more nuanced. This article actually gives a very good summary of that if you care to get through it
When you say his influence is detrimental I think you need to understand who else might have been more influential if Corbusier didnt exist. The answer is not some proto-Jane Jacobs itd be someone like Gideon, Häring or Moser. People who equally didnt understand urban life (its taken us a century since to progress even as meagrely as we have) but also wouldnt have been able to articulate where modern construction and cities were moving to like Corbusier did.