This is not an argument in favour of a search engine/browser penalizing HTTP servers.
Why isn't it? By navigating to a domain (or searching for it), the user is arguably making an intent statement ("I want content on $domain"). Ensuring that the user doesn't get spam, malware, etc. instead seems well within the scope of the browser.
"Then don't do the thing you disagree with? It's a free and open web"
"Why don't you start with agreeing with my position first?"
"Yeah, whatever, feel free to die fighting against it"
I think advocating against somethig, generating a discussion, moving the Overton window is a valid, almost necessary thing. (I admit sometimes they threaten the things I like (or me), but most of the time, it's OK.)
Perhaps "agreeing" was a bad choice of word, instead discussing, debating, or just letting me know your opinion about the matter.