**sigh**
Censorship is something with a lot of knee-jerk reactions to it with very little understanding of why we generally see it as a bad thing, but often do it and justify it. But at the same time there are variations to the world that say sometimes it's good, and sometimes it's bad. Few would argue you shouldn't insult you boss if you want to stay employed, but fewer would say you should never under any circumstances contradict your boss and you should be fired for not agreeing at all times. The former a level of respect that should be afforded to people in stations above you is fairly reasonable reasons to self censor especially in the heat of the moment. The latter, the reaction of an egotistical narcissist afraid of any ideas not their own or the idea of being wrong, can actually be very harmful to the company.
As it stands, While hyperbolic, the backlash against the new metroid is based in an old complaint about trying to slip new IPs into an old brand. That you shouldn't, say, call your movie Catwoman if isn't about a female cat burglar, or that it's lazy to slap mario or pokemon onto your puzzle game to boost sales. I'm honestly mixed in that area as I have been burned by a few "in name only" sequels and spin offs, but then think Metroid fans of all people should have learned from Prime that someone not to our expectations can still be completely awesome. Still, I think my only problem with that is the calls to cancel, not just rebrand the game.
Compared to what normally gets caught in the self censorship debate it seems more benign because I don't think anyone is really trying to stop an idea, while the pulling of that Pillars of Eternity poem, GTA from a couple of targets, Hatred from Steam, stopping a few comic covers, or even comedian's jokes have roots in being fearful of certain ideas. This idea can not proliferate so it must e stopped before it can. I realize some people are about to try and defend that mindset, but I've lived too long to have not seen it applied by others. Too many periods where you couldn't include gay people or have anything anti religion lest you bring down the church on you, or political periods were it was okay to get someone fired if they went against the political norm. Hell, I've seen things like games and comics fight hard for the right to go against the moral majority or the religious right to o long to see it replaced by moral majority of the hyper sensitive left.
Any pressure to see an idea reformed but kept true to its intent is not censorship. Pressure to stop an idea at all is. You might think you're justified, but so do bible thumpers, activists groups like PETA or One Million Moms (yes they're still around) or right wing pundants upset when a movie message is too liberal.
