Deciding which content to promote and which to bury is censorship however you do it. There's more content than human attention, if you promote one piece of content, whether you choose to do it chronologically or with updoots or Google bosses deciding what's true, you're "censoring" something else by crowding it out.
Yes, although it could be mitigated, by having different sort order options and allowing users to adjust scoring options, including to accept or disable scores put in by others. (Local scoring is something often done in NNTP. Some NNTP clients also support global scoring, although a better more simplified and general format suitable for many programs might be helpful, and must ensure that users can easily disable that feature if it is not wanted, as well as to adjust weights that apply to it.)
You seem to be yet another person who needs to get a lot more acquainted with the definition of "censorship". Words have meanings. Comparing the mere promotion of some content over other content with "censorship" is gravely ignorant, for starters, and also, it's an insult to all those who have suffered from actual censorship.
Please learn the difference and don't gaslight people about this.
