[repolfx]

I don't, because you can still see such comments (it may require an account and flipping a switch). And in fact I browse Hacker News with showdead turned on, and I often start from /active so I can see stories and comments other people don't want me to see. This isn't censorship because Hacker News itself still makes them visible: it's more like spam filtering in that regard, where content is being categorised but not censored.

Spam filters in particular are not censorship because they are ultimately just labelling devices. Because of their accuracy many people often accept and act on those labels automatically, but they don't have to, and actually recently Gmail's filters got terrible and so I have to check my spam folder all the time now.

In some cases spam filters flat-out reject messages and don't even show them to the recipient, not even in a spam folder. I understand the technical reasons for that (full storage and processing of spam is expensive), but, that gets much much closer to the border of censorship, with the only real difference being one of intent.