Is this also censorship?

What? What's your context for asking me that rhetorical question? My problem in this thread was with a good, solid comment that made a good point (written by Vladimir M) getting downvoted. I didn't say he was censored. I simply pointed out that he got a downvote for a bad reason and I suggested a possible fix.

Elsewhere I mentioned that in hacker news I had been permanently frozen out because of my first comment being downvoted. But that was to answer folks who were criticizing my decision to delete my own comment. I explained the history of my concern.

I'm not sure how your question applies to any of this.