It's interesting that now the narrative is that all these words are being censored due to advertisers.

By my memory, at least some subset of these terms was being self-censored because they were triggers or considered offensive for other readers / users of various sites and people were trying to protect others by avoiding words that upset them. That's what I was told about words like rape, suicide, and profanity like fuck, bitch, etc. At the time when I was first noticing a strong trend towards self-censoring, most of the sites I was seeing it on had little to no advertising, particularly not from major brands, so this while that may be the reason for the trend to continue, I'm not convinced that's why it started or how it became widespread.