This was effective for me around a decade ago. These days it feels like most algorithmic content generation sites don't care when you express negative interest in something.
That's not true. My only Instagram engagement is blocking obvious scam content should I accidently open the app and it still shoes me nothing else but that.
You absolutely do not have control over the content you're shown. Why would they give you that power?
> YouTube’s ‘dislike’ and ‘not interested’ buttons barely work, study finds.
> A Mozilla report found feedback buttons didn’t stop the majority of similar recommendations
https://www.theverge.com/2022/9/20/23356434/youtube-dislike-...