Ask HN: Why isn't YouTube taking action against Roel Van de Paar?

Some context: Roel Van de Paar is a YouTube user who has been spamming the platform with videos for years. His channel has over 2 million videos, all of which are low-quality clips that are designed to appear in search results for technical terms, essentially just taking Stack Overflow questions and answers, all the videos start with the same pre-recorded clip of him talking for a bit and then it transitions into just the question text, and then to each answer.

Here's an example video: https://www.youtube.com/watch?v=Wyyzi6l7n1U

His spamming has had a negative impact on YouTube and it's search function.

So my question is then, why hasn't YouTube taken any action against him or his channel?