Edit: I posted the following comment to my video, and this was deleted too. This could not be a spam filtering false positive:
"The world's sanitisation problem could be helped with more recycling of chinese trash, especially in wuhan. The green waste that's turned into compost in tiananmen square is a bonus to sustainability."
If you make a comment, and it is censored for some reason, perhaps the video owner blocked you or whatever, the comment still shows; TO YOU. When you are logged in, you can see your comment.
But no-one else can see it.
Log out, or logon as someone else, and your comment is simply not there.
I found a similar thing with facebook. If you join a group, and are then banned for some reason (I'm not sure the exact mechanism), you can no longer see the group - it's as though it doesn't exist; it doesn't show in searches, etc. But log out, or logon as someone else, and there it is.
This 'customized view of reality' seems to me much more dangerous than simple censorship.
This is probably just an anti-spam measure. There are many anti-china bots out there, so posting off-topic bot-like comments will get you removed.
What happened to Occam's razor?
https://www.reddit.com/r/HongKong/comments/glr2h4/youtube_go...
I really hope that is just some stupid bug and not on purpose. The trigger keywords seem pretty harmless to me.
It's not perfect, but progress has been made here, more often than not an overly aggressive moderation that yields better more informative comments is better, even at the risk of the legitimate ones being removed.
There's some nice channels I see, but anything discussing something even remotely political (which, these days, includes mobile networks, solar panels and other categories that have fallen victim to conspiracy nuts) are full of trolls or shit people in general. Some comment threads incite violence against Jews, others violence against Muslims, and then there's the white supremacists inciting violence against everybody.
Putting comments trolling any Chinese viewers below anything that covers China is something that's taken off lately, either because of racism or because of increased activism in Hong Kong.
Having everybody be free to say anything had led the YouTube comments to be generally regarded as a place or toxicity and horror for many people. YouTube trying to brush up their image after Elsagate and other such PR disasters only makes sense, and their comment section is the first I'd personally clean up. I don't know how you'd do that without dancing on the dangerous line between (American) expectations of complete freedom of speech and getting out the nutjobs, but someone over at Google seems to be trying to and probably uses this new-fangled machine learning thing to do it because it doesn't involve paying people to keep the stream of verbal manure in check.
There's also the danger to your platform that comes with angering Chinese nationalists. When Notepad++ added a message to stand up to the Chinese concentration camps, its Github got completely flooded by angry Chinese people and trolls from both sides. Some of the people calling the author "filthy dog" and other expletives were maintainers of seemingly commonly-used libraries and projects. Criticising the worst of China seems to have the same effect as posting a video of a burning American flag. I doubt many platform owners would like their platform to host these social garbage fires.
All of that culminates into topics where trolling often occurs being removed or shadow banned. Posts on HN get shadowbanned as well, usually after manual flagging, but I do have doubts about the absence of troll farms controlling the narrative here.
As far as I know, YouTube has always had certain words being blacklisted, usually swears and such. This system can also be used by channel owners to maintain their comment section. I can only imagine when Google decided to add material criticising China, but I'd expect it would have started when the first Hong Kong protests were met with violence.
共匪, 五毛党, or 五毛
These are all instantly deleted, roughly 10-20s
Edit: As comments pointed out, I clearly didn't read the post properly, OP already stated it was his own video.
But it strikes me as odd that that comment sounds so innocent to you. There's an ongoing multi-sided arms race between AI-assisted spam filters, censorship, trolls, socio-political movements, scammers, etc. The result being that many groups find new ways of communicating and circumventing filters.
So, if I randomly came across your uncanny and unnatural post in the current context, it would read to me as if you were crypto-advocating for chinese genocide to help resolve world overpopulation, calling the Tiananmen massacre a net positive for mankind.
Seriously, read it carefully.